silicone molds manufacturer
Your Best Silicone Mold Manufacturer and supplier in China

Baiwe is one of the leading silicone mold manufacturers with full certifications.

We Have Full Set of Equipment for Your Silicone Mold Project

Baiwe is an excellent custom silicone mold manufacturer with over 15 years of mold making, and custom-made molded silicone parts. We have various different molding services for your choice, like silicone compression molding, silicone overmolding, liquid silicone rubber injection molding, etc. It will depend on your silicone mold design, application, cost, to choose which custom silicone molding method is the best way.

No matter you are looking for an industrial custom silicone mold manufacturer, or consumer silicone mold supplier, like silicone mold for chocolate or silicone mold for cake. We would like to be your reliable custom silicone mold manufacturer.

Send us your specific project demand today! We will offer the best solution for your custom silicone molds.

silicone molded parts

LSR injection molding parts made by medical-grade silicone gel

Silicone pacifier silicone molds

LSR injection molding can make high-quality baby silicone pacifier

silicone molds for medical silicone valve 

LSR molding can make high precision medical silicone valve

Medical pressure ball made by silicone molding

Liquid silicone molding can produce high standard medical pressure ball

silicone molds for baby silicone toothbrush

Baby silicone toothbrush made by liquid silicone molding with medical-grade silicone gel

Medical oxygen mask made by silicone molds

Liquid silicone rubber injection molding can make high-quality medical breathing mask

Baiwe:We Will Be Your Reliable Silicone Mold Manufacturer and Supplier

If you cooperate with us, you will get the following quality services.

One-stop solution for you: We have our own high-precision silicone mold service and a full set of silicone mold production equipment, which can customize different types of silicone rubber products. You only need to send us your 2D or 3D design draft, or even your idea, We have a professional design team, silicone mold technicians, production team, marketing team, after-sales support, just to reduce your troubles of finding different silicone mold manufacturers and suppliers.

The smallest tolerances of silicone mold can reach up to ±0.01mm: Because we have been focusing on silicone molding for many years, continuously improving silicone mold technology and perfecting our production process, we can achieve very perfect tolerances.

Very small flashes and parting line: As we all know, the finished products made by silicone mold often have many burrs and big parting lines, which has become an industry problem. We keep optimizing our silicone mold manufacturing processes, and we can achieve very small flashes and parting lines for your project.

7/24 professional service: We have a professional team for your silicone project online at any time.

Pls send us your inquiry right now, we can make sure we will be your best choice for silicone mold manufacturers.

other custom silicone parts

We Can Offer You 3D Design Silicone Mold Service For Free

As a professional Silicone mold manufacturer and Supplier in China, we have an amazing R&D team that can provide you with a free 3D design always.

Share your ideas now and we will take you from ideas to the physical silicone mold and silicone rubber products production stage.

Silicone Rubber Molds – A Comprehensive FAQs Guide


Silicone rubber molds are a great way to make custom products.

If you are new and want to get started with silicone rubber mold, this FAQ guide is for you!
Keep reading to get the best answers to the questions related to silicone rubber mold uses, production and buying options.

  1. What Is The Best Material For Making A Rubber Mold?
  2. What Payment Methods Does Rubber Mold Manufacturers Accept?
  3. What Type Of Certifications Are Required By Rubber Mold Manufacturers?
  4. What Is The Delivery Time Promised By Rubber Mold Manufacturers?
  5. What Are The Applications Of The Rubber Mold?
  6. What Type Of Parts Can A Rubber Mold Manufacturer Design?
  7. Which Is Better Between Polyurethane Mold Rubber And Silicone Mold Rubber?
  8. How Long Do Injection Rubber Molds Last?
  9. How To Take Care Of Rubber Molds?
  10. How Should I Store My Rubber Mold?
  11. Is Silicone Rubber Toxic?
  12. Does Silicone Rubber Mold Tear Easily?
  13. Does Silicone Rubber Mold Melts In Boiling Water?
  14. Is Silicone Rubber Mold Waterproof?
  15. Does Silicone Rubber Mold Melts In Oil?
  16. Does Silicone Rubber Mold Melts In Microwave?
  17. How Hot Can A Silicone Mold Get?
  18. What Happens If You Eat Silicone Rubber?
  19. How Long Will A Silicone Rubber Mold Last?
  20. Does Silicone Rubber Mold Manufacturer Accept Oem?
  21. How To Find A Reliable Silicone Rubber Mold Manufacturer In China?

What Are Silicone Rubber Molds?

Silicone Compression Molding

Silicone Rubber molds are usable rubber products created from rubber molding, where a block of rubber is pressed in a rubber molding metal cavity to attain the desired shape. The pressed rubber is then exposed to heat to activate the chemical activity. This provides the mold the ability to regain its shape even after pressure is exerted.

These silicone rubber molds are used for various industrial and household applications, including bakeware, seals, gaskets, surgical devices, etc.


What Are The Best Materials For Making A Rubber Mold?

Different Types of Rubber Material for Molds

There are numerous types of rubbers used for making rubber molds. Some of them are as follow:

  • Ethylene Propylene Diene Monomer (EPDM) Rubber:It is the perfect material for outdoor applications, as it provides outstanding resistance to oxidants, ozone, and severe weather conditions.

Besides, It also has excellent heat resistance and color stability with dielectric qualities. EPDM has a number of benefits over traditional rubber, such as neoprene. It offers high tensile strength and resilience at a lower cost than both natural rubber and polyisoprene do.

It’s generally not a good idea to use EPDM in applications that involve petroleum-based products because it can be attacked by mineral oils and solvents, but there are some exceptions.

It has a tendency to be conductive when carbon black is mixed in the compound, which makes most of its colors. Additionally, EPDM isn’t an electrical insulator, so examples include vehicular seals, glass run channel weather-stripping, trim seals, belt weather-stripping, etc.

  • Natural Rubber: It is an excellent material for general-purpose elastomers, but it does have some limitations. It has high tear resistance and tensile strength, along with good abrasion resistance at low temperatures. However, natural rubber cannot be used where it will come into contact with chemicals or oil as well as in outdoor use due to its lack of stability against oxygen, sunlight/UV rays (ozone), and temperature extremes. Its most common products include gloves and other medical equipment.
  • Santoprene: It is a high-performance elastomer that successfully combines the flexibility and low compression set of vulcanized rubber and thermoplastic’s property of ease in processing. It’s used because it has a longer life than rubber, making it favorable for extreme hot or cold environments.

Santoprene rubber is an environmentally friendly material that can be recycled. In addition, the cost-efficient and easy-to-produce materials are safe for the environment, making them a great option in manufacturing.

All the aforementioned properties, along with environmental resistance and fluid resistance, make this material suitable for applications including Appliances, Automotive, Building and Construction, Business Machines, Electrical/Electronic Components, Fluid Delivery, Food Contact, Hardware, and Medical Devices.

  • Styrene-butadiene rubber (SBR): Also known as Styrene-butadiene, the SBR rubber has various properties, including its flexibility and resistance to chemicals. Compared with natural rubbers, SBR is easily formulated into high styrene resins for good abrasion wear qualities. In addition, other elastomers can be compounded to give excellent tensile strength when mixed with the hardening material.

In addition to being extremely resistant, SBR is also very flexible. This makes it a strong candidate for use in many rubber products such as vehicle mats and glass window sealing weather-stripping.

  • Neoprene (CR): It is a durable and water-resistant material that protects things from damage. It has good resistance to grease, oils, hydraulic fluids, ozone attack and can be used for cushioning or barrier protection against materials housed within it. Neoprene does well with fluctuations in temperature but performs poorly when tested consistently at low temperatures as the neoprene will self-extinguish any fire around itself.

A highly versatile material, neoprene is used for several applications, including wetsuits, car fan belts, and electrical insulation. It can also be applied to industrial purposes such as gaskets or hoses in addition to being an effective noise insulator required by power transformer equipment.

  • Nitrile (NBR): It is resilient and resistant to petroleum, aromatic hydrocarbons, mineral oil. Its cost makes it not ideal for applications where oil resistance isn’t a major issue. However, when the need arises, its performance justifies the price. Nitrile rubber is generally attacked by esters, ozone, ketones, and chlorinated or nitro-hydrocarbons.
  • Silicone Rubber: It is an ideal option for those who need their products to have superior resistance against extremes in temperature. Additionally, it has a wide array of other unique features, such as excellent tensile strength and abrasion resistance. While some may consider the cost prohibitive because of its high-temperature tolerances, Silicone can be used where that’s not necessary too.

Some of its prominent applications include automotive, appliance, electrical/electronic, and aerospace.

  • Viton (Fluoroelastomers):It is ideal for resisting a wide range of corrosive fluids at higher temperatures while maintaining their mechanical properties. Fluoroelastomer resists weathering, flame, ozone and oxygen; good tensile strength; resilience; low compression set. Unlike many other elastomeric materials (rubber), Viton Fluoroelastomer retains their basic physical property even when exposed to extremely high or low temperatures.

Fluoroelastomers still undergo extensive development. However, this material is an ideal component due to its high mechanical stability under harsh conditions that make it cost-effective for many applications like fluid handling and sealing, where the optimal performance cannot be achieved otherwise.


What Payment Methods Does Rubber Mold Manufacturers Accept?

Reliable Rubber Mold manufacturers like BaiweSilicone accept the following payment methods:

  • PayPal
  • Letter Of Credit (L/C)
  • Telegraphic Transfer (T/T)
  • Western Union
  • International General Payment
  • Bank Transfer

What Type Of Certifications Are Required By Rubber Mold Manufacturers?

Some of the Certifications Required By Rubber Mold Manufacturer

There are numerous certifications that a Rubber Mold Manufacturer may require depending on their product types, manufacturing location, and client’s location. Some of the prominent certification acquired by reputable manufacturers are as follow:

  • BSCI Audit:A program known as Business Social Compliance Initiative certifies that the manufacturer/supplier will provide improved working conditions as a BSCI’s participating member company.
  • FDA (Food and Drug Administration) Certificate: It means that the US Food and Drug Administration has approved the product after conducting several clinical tests on animals and humans.
  • LFGB Certificate: It confirms that the silicone product is not harmful and non-toxic. The inspection by Germany and other European countries has also confirmed this result which complies with the regulatory requirements of these regions.
  • SVHC (Substance of Very High Concern): This certificate of conformity is a formal legal document issued by the European Union to certify that Silicone Rubber Material has been regulated under their REACH Regulation.
  • CE/EU: CE marking is an indicator of product safety and ensures products meet EU standards. CE marked items can be manufactured anywhere globally but must adhere to these standards if they are sold within European borders.
  • ROHS: This certificate confirms that a silicone rubber product has been manufactured with limited levels of hazardous substances.
  • Some other certifications that the manufacturer may also acquire include ISO, SEDEX, EEC, EN71 (by SGS), etc.

What Is The Delivery Time Promised By Rubber Mold Manufacturers?

The delivery usually depends on the quantity of the product. However, it is normally around three weeks.

What Are The Applications Of The Rubber Mold?

Silicone Rubber Medical products

Rubber Molds are used in an array of industrial and household applications, including:

  • Baby Care Products
  • Bakeware Products
  • Medical Equipment Including Dental Grips, Prosthetics, Implants, Instrument Handles, And Tubes.
  • Cases And Sleeves
  • Keypad And Buttons
  • Different Types Of Seals
  • Wide Range Of Weather Stripping
  • Hoses, Gaskets, And Anti-Corrosion Coatings
  • Transformer Applications
  • Appliances
  • Automotive Applications Including Bumpers, Seals, And Suspension Parts.
  • Business Machines
  • Construction And Building Applications
  • Electronic And Electrical Equipment
  • Electrical Safety Equipment
  • Fluid Delivery
  • Industrial Hardware
  • Aerospace Custom Rubber Requirements
  • Vehicle Mats
  • Custom Agricultural Rubber Components
  • Lawn And Garden Applications
  • Material Handling

Which Is Better Between Silicone Mold Rubber And Polyurethane Mold Rubber?

Both of these rubber mold materials have advantages and disadvantages depending on the application. The following table will give you a basic idea:


Rubber Mold Material TypeAdvantagesDisadvantages
Polyurethane· Higher strength compared to Silicone

· Relatively cheaper than Silicone

· Available in a wide range of hardnesses

· Requires release agent

· Sensitive to moisture (in liquid form)

Tin-Cured Silicone Rubber· Doesn’t require a release agent

· Have remarkable chemical resistance

· Cured rubber has less storage life

· Relatively expensive than Polyurethane

· Shirks on cure

Platinum-Cured Silicone Rubber· Doesn’t shrink on cure

· Amazing Chemical Resistance

· Cured rubber has a longer storage life

· Doesn’t require a release agent

· Cure may inhibit my some surfaces

· Relatively expensive than Polyurethane


Note: Polyurethane and Silicone can further be classified into different types depending on their hardness, viscosity, color, pour time, cure time, etc.) So we have only chosen the most prominent types for each product line.

How Long Do Rubber Molds Last?

The Rubber Mold life depends on numerous factors, including its material type, usage, storage, etc.

A Tin catalyst silicone molds last about 5 to 7 years, while Platinum catalyst silicone molds and Urethane rubber molds can last over 20 years if stored properly.

How To Take Care Of Rubber Molds?

silicone rubber mold

Taking proper care of rubber molds can help increase their life. You can follow the tips below to take care of rubber molds:

  • If using rubber molds for casting, always use mold release for getting the castings out. This will make the process easier and increase the mold’s life.
  • Don’t pull at the mold too strongly. Instead, release the cast product by softly moving around and take apart the mold instead of pulling strongly at one end.
  • Silicone molds store best when kept cool and dry. Exposure to direct sunlight can cause them damage or even warp!
  • If you plan on storing your silicone mold for an extended period, consider casting a piece in it.
  • Don’t pierce holes in your mold. It may cause the shape of how it cures to be affected, and you’ll end up with an undesirable product!
  • When you are done using silicone mold, wash it gently by hand and dry thoroughly before storing it. Do not use solvents or place them in the dishwasher, as this will damage its quality over time! Store molds flat on their sides; do not stack them upright, so they don’t get misshapen from being walked upon when stored like this for an extended period. Consider putting a paper towel underneath each one if necessary to absorb any additional moisture which may accumulate during storage.
  • A few things to keep in mind when working with silicone molds: always be careful not only for yourself but also for your materials. We don’t want anything burned or warped! Also, use a heat gun instead of flame from other devices to achieve more even results.
  • Silicone molds are durable and can be used for a variety of materials. However, it is recommended to dedicate one mold per material so that you don’t end up with concrete particles in your epoxy resin cast if you switch back and forth between different types of curing compounds like cement or wax while using platinum cure silicone molding technology!

How To Preserve or Store Rubber Molds?

Silicone Rubber Molds

Molds are like little factories, and it’s important to keep them in good working condition. However, molds can be damaged by improper storage, so make sure you store yours safely!

Following are some of the necessary points that you must remember while storing the rubber molds:

  • Clean the mold cavity with a soapy water and sponge. Let it dry thoroughly before reuse or storage.
  • To store your rubber mold, Cast plaster into the form and let dry. Do not de-mold until ready to use again. However, please do not use a urethane resin or epoxy for this step as it can cause damage to both plastics and resins over time due to its chemical reaction with air pollution.
  • It is best to place the rubber mold (with casting) in an unused garbage bag and then seal tightly.
  • Always place the mold on a flat level surface. Besides, avoid placing any other object below or above the mold, as it may cause to mold to deform permanently.
  • Store your rubber mold in a cool, dry environment out of the direct rays of UV light.

Is Silicone Rubber Toxic?

No, Silicone is non-toxic, chemical, and physically stable, according to experts.

Does Silicone Rubber Mold Tear Easily?

Silicone Rubber Molds with higher hardness will tear easily. Therefore, the manufacturers must choose the favorable hardness of the silicone rubber for producing molds.

Does Silicone Rubber Mold Melts In Boiling Water?

Silicone is a durable material that can withstand high heat. Its melting point reaches well into the hundreds of degrees Fahrenheit, but this doesn’t mean it will melt at any time or in boiling water! In fact, Silicone has an even higher resistance than metal to temperature changes – up until 400°F (250 °C).

Above this range, there may be some degradation from physical forces such as expansion due to contractions within each molecule caused by sudden heating/cooling cycles over short periods.

Is Silicone Rubber Mold Waterproof?

Yes, Silicone Rubber Molds are Waterproof. They can easily be washed in dishwashers too.

Does Silicone Rubber Mold Melts In Oil?

Silicone rubber molds such as silicone kitchen utensils can withstand heat up as high as 600 degrees Fahrenheit. Hot oil temperature ranges from 350 to 375 but can reach 500 with an overheated product that may catch fire, so it’s safe for silicone tools in all cases!

Does Silicone Rubber Mold Melts In Microwave?

Silicone Rubber Mold in Microwave

No, Silicone Rubber Mold won’t melt in Microwave. In fact, they are microwave-safe, oven-safe, and freezer-safe.

Silicone rubber molds are a common choice for home cooks because they’re safe, durable, and easy to use. However, there is one major benefit that Silicone has over other materials – it can be used in the microwave oven!

Silicones have been shown time after time as being safe enough by government agencies like FDA who regulate food-grade plastics or rubber when cooked on at temperatures up to 35°C (95º F).

How Hot Can A Silicone Rubber Mold Get?

You can use silicone rubber molds like silicone bakeware in the oven up to 428 degrees Fahrenheit, and it’s easy to clean. You may even go from cooking at high heat to freezing without worrying about damaging your dish! It’s not just for baking either – you’ll also be able to save money by using these pans instead of metal ones that react badly when exposed to great heat/cold fluctuations; they’re tolerant against both types of changes, so there’s no need to buy two sets if one will do just fine? Plus, their lightweight design makes them perfect for many other applications.

What Happens If You Eat Silicone Rubber?

Silicone Rubber is chemically inert, so it won’t break down or poison your body. However, it won’t digest or break down, so it may choke you.

Does Silicone Rubber Mold Manufacturer Accept OEM?

Yes, BaiweSilicone is among manufacturers that provide OEM/ODM services for Silicone Rubber Molds.

How To Find A Reliable Silicone Rubber Mold Manufacturer In China?

Compression Rubber Molding

To find trustworthy and reliable silicone rubber mold manufacturers in China, you can consider the following steps:

  1. Most reliable manufacturers have their official websites, which you can search through search engines like Google, Bing, etc. You can visit their websites and analyze them. You can look for their product catalog, certifications, achievements, existing clients, etc. Besides, you should also have a detailed conversation with their representative and visit their manufacturing facility.
  2. Once you have narrow down the list of manufacturers, you can choose the best one based on the following criteria:
    1. A reliable manufacturer has at least 10 to 15 years of experience in the rubber mold manufacturing industry.
    2. They have all the required local and international licenses and certifications for producing high-quality and safe products.
  • They have a high precision mold-making plant that can manufacture custom-made high standard silicone rubber parts with the molded part size tolerance up to +/-0.01mm.
  1. They offer a wide range of products, as well as expert-assisted product customization for their client.
  2. They have a highly trained and skilled team with rich experience in product design, prototype development, tooling, manufacturing, and after-sales services.
  3. They have a well-equipped manufacturing facility with state-of-the-art machinery and equipment, including Liquid Silicone Rubber (LSR) Injection Molding plant, mold making plant, a silicone rubber compression molding plant.
  • They have a well-established R&D department to improve product quality, cost, and safety.
  • They only use reliable, high-quality, and safe materials that comply with local and international safety standards such as BSCI, ISO9001, FDA & LFGB.
  1. They impose a strict quality system. Besides, their product goes through quality and safety inspection before delivering product to the client.
  2. They accept small MOQ quantities and ensure record delivery time.

The aforementioned qualities, along with many others, are important to consider the manufacture reliable. Luckily, you can find all these characteristics in BaiweSilicone.

What Are The Different Types Of Processes To Make Rubber Molds?

The rubber molding process is a great way to create chemical, environmentally compatible, and resilient products. In addition, these materials can return their original shape after being stretched or otherwise distorted without any damage!

The rubber molding process is a crucial step in the production of many products. There are three variations to this manufacturing technique, depending on what’s desired:

  • Compression Molding
  • Transfer Molding
  • Injection Molding
  • Liquid Injection Molding

Compression Molding:

Figure 10: Compression Rubber Molding

The compression molding method has been around for a long time, and it is still one of the most common methods used to create products like toys or car parts.

Before beginning any rubber production, manufacturers first form raw materials into pre-molding that closely resembles their final product shape so they can be filled with more than necessary material during the process while ensuring good quality standards are met at all times.

Once the pre-forms are ready, the compression molding process continues as follow:

The first placement of the form into the cavity. Next, application pressure and heat that forces it to fill in accordance with the shape at this time is also known as “compression.” Once filled (usually about 10 seconds), the curing agent is sprayed on top for catalyzing compounds that cause cross-linking molecules; then manual removal by hand where excess material can be trimmed off if necessary after curing has occurred final part meets quality standards set beforehand.

Transfer Molding:

Transfer Rubber Molding

Transfer molding is an interesting, newer technique in terms of manufacturing.

The main difference between it and compression molding comes from where you place your raw material during the process: while with transfer molds, pre-forms are placed into pots that sit above (and below) a plunger; whereas for compression-molding, these go directly onto one cavity walls themselves without any extra chambers or containers being used first!

A typical transfer molding operation is as follows: The pre-form goes into a pot, then pressure is applied by the plunger to cross-link molecules.

Next, it’s compressed and transferred into the cavity where curing fully takes place before removing the part from molds or nitrogen de flashing occurs – post operations that may be done after making pieces outfitted with these special features are necessary for them not only to look good but work well too!

Injection Molding:

The rubber injection molding process uses the same basic principles as plastic, and it too can be split into two separate parts: heating raw material until it becomes liquid form, then manipulating said material so that it will fit perfectly into an appropriate space.

The primary difference between these techniques lies primarily in how much emphasis is placed on time during cooling phases; whereas for plastics, there’s generally long periods of waiting involved before they’re ready to go again with another cycle – this isn’t really true when employing a more thermoplastic polymer like PVC which many companies have successfully used!

The steps in this manufacturing method are as follows:

  1. A custom or standard mold should be created to withstand the noteworthy pressures produced during operation;
  2. Feeding a synthetic compound into the screw and barrel on machines used for polymer casting is called “molding presses.”
  • High-pressure injections under heat conditions (350–450° F [176 -232 °C]).
  1. Molds melted at about 600 degrees Fahrenheit.
  2. Form removal from the cavity after cooling should take place within two minutes.

Injection molding is among the most prevalent ways to produce various products because it’s efficient and versatile.

In addition, injection molds also have higher production rates than other methods for making molded rubber pieces with individual features such as complex shapes or detailed textures that any other process on earth cannot achieve!

Liquid Injection Molding of Silicone:

The liquid injection molding process (LIM) employs a machine similar to plastic injection. However, it uses cooled two-part material that is combined and then delivered for pressing into a finished part.

The liquid injection molding process has effective control over pressure, temperature, and speed of injection.

It can be fully automated to produce high quantities without post-molding operations with very consistent difficult parts that may not be made by other means in a timely manner. However, care must be taken when working with this technique since it requires much clamps tonnage as well!

A typical liquid injection molding (LIM) molding operation includes the following stages:

It starts with creating a standard or custom tool that can withstand pressures produced during production.

Next, two-part silicone liquids are pumped into cooled mixing units mounted onto presses where they cook under pressure before being processed by machines such as autoclaves and chillers, respectively;

All of these tools ensure high-quality end products!

High injection rates allow for faster cure times while maintaining shape retention throughout storage periods – which can last from weeks up months depending on how long you want your product around afterward!

Finally, we remove any leftover forms using automatic ejectors or operators.

Do Manufacturers Produce Custom Rubber Molds?

Custom Rubber Molds

Yes, well-reputed manufacturers like BaiweSilicone offer complete rubber mold customization. They also have a highly skilled team to help their client to achieve the best results.


What Is The Process To Get A Quotation From Rubber Mold Manufacturer?

To get the best quotation, you need to provide:

  • A print or a sample of your part for review;
  • Estimated annual usage requirements (for assistance in tootling design);
  • Name of the material you require. You can also describe the environment on usage if you are unable to indicate the material.

Does Rubber Mold Manufacturers Assist Is Rubber Mold Customization?

Yes, reliable manufacturers like BaiweSilicone has a qualified team to assist their client in rubber mold customization.

Does Rubber Mold Manufacturers Assist In Determining The Best Rubber Material For Client’s Application?

BaiweSilicone has decades of experience and a qualified team to the suitable rubber material for your application and your durometer requirements.

Can Silicone Rubber Mold Manufacturer Provide Product In Custom Colors?

Yes, manufacturers like BaiweSilicone can fulfill almost any color requirement of the client.









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