Platinum Cure Liquid Silicone Rubber for Silicone Breast Form / Breast Prosthesis / Nipple Pasties / Bra Padding Skin Safe

Product Description

Product Description

Product Overview

Our platinum cure liquid silicone rubber (LSR) is a two-component, addition-curing silicone elastomer specifically formulated for manufacturing silicone breast forms (breast prostheses), nipple pasties, silicone bra inserts, bra paddings, breast enhancers, push up pads, and adhesive bras.

This medical-grade material is engineered to mimic the texture, elasticity, and weight of natural breast tissue, providing an authentic and comfortable experience for users. Platinum-cured silicone is widely recognized as the gold standard for body-contact applications due to its purity, biocompatibility, and superior mechanical properties.

Whether your customers are producing post-mastectomy breast prostheses for medical use, fashion nipple covers for everyday wear, silicone bra inserts for cup enhancement, or self-adhesive bras for backless outfits, our LSR delivers the softness, durability, and safety required for premium-quality products that meet international regulatory standards.

Key Features

• Medical Grade Biocompatibility: Meets ISO 10993 biocompatibility standards for cytotoxicity, skin sensitization, and irritation testing. Compliant with FDA regulations for medical device materials. Non-toxic, odorless, hypoallergenic, and latex-free.

• Ultra Soft Real Feel Texture: Formulated to replicate the look, feel, and movement of real breast tissue. Provides a natural weight and bounce sensation. Recommended Shore A hardness of 0-15 for breast forms and 5-20 for bra inserts.

• High Tear & Tensile Strength: Tear strength up to 14-25 kN/m ensures products withstand repeated handling, stretching, and washing without tearing. Essential for reusable products like breast forms and adhesive bras.

• Excellent Elasticity & Recovery: High elongation at break (up to 800%) allows the material to stretch and return to its original shape, maintaining comfort and fit over extended use.

• Platinum-Cured (Addition Cure) Technology: Our platinum catalyst system ensures stable, consistent curing with no byproduct release. No peroxide residues, no volatile organic compounds, no inhibition issues. 1:1 or 10:1 mix ratio options available.

• Low Viscosity & Bubble-Free Processing: Excellent flow characteristics (viscosity as low as 1,500-2,000 cps) allow easy pouring and degassing, producing bubble-free products with smooth surfaces.

• Ultra-Low Shrinkage: Linear shrinkage ≤ 0.1% ensures precise dimensional accuracy for products that must fit comfortably against the body.

• Adjustable Hardness (Shore A 0-60): Shore A 0-15 for ultra-soft breast prostheses, Shore A 5-20 for breast pads and inserts, Shore A 15-30 for push-up pads, Shore A 20-40 for adhesive bra bases.

• Fast & Adjustable Cure Time: Pot life of 15-40 minutes at room temperature (adjustable). Demold time of 2-6 hours. Heat acceleration available for high-volume production.

• Wide Operating Temperature: Stable from -60°C to +220°C, maintaining flexibility and performance across diverse environmental conditions.

• Excellent Detail Reproduction: Low viscosity and smooth flow capture fine anatomical details and surface textures with exceptional fidelity.

 

Technical Datasheet

Model Code	GTSIL-P00	GTSIL-P5	GTSIL-P10	GTSIL-P15	GTSIL-P20	GTSIL-P25	GTSIL-P30	GTSIL-P35	GTSIL-P40
Hardness - Shore A	0	3-5	8-10	14-16	18-20	24-26	28-30	34-36	38-42
Viscosity - Cps	1500-2200/6000-7000	1500-2200/6000-7000	1500-2200	2000-3000	2000-3000	2000-3000	4000-5000	6000-8000	8000-10000
Mixing Ratio - %	1:1	1:1	1:1	1:1	1:1	1:1	1:1	1:1	1:1
Tear Strength - KN/m2	5-6/7-9	7-9/10-12	15-18	16-19	20-23	23-25	20-23	18-22	14-17
Tensile Strength - Mpa	2-3	2.5-3.5	3.5-4.5	3.5-4.5	4-6	4-6	4-6	4-6	3.5-5.5
Shrinkage - %	0.1%	0.1%	0.1%	0.1%	0.1%	0.1%	0.1%	0.1%	0.1%
Elongation - %	500-600%	650-850%	600-800%	600-800%	500-600%	400-500%	400-500%	400-500%	350-450%

 

 

Applications

Due to its good characters and excellent performances , GTSIL-P series silicone is with a wide range of applications as below:

Industry mold making : plaster ,gypsum, concrete, stones, wax, jewelry, polyurethane ,polyester resin ,jewelry etc.

Food grade mold making: cake ,candy ,chocolate etc.

Life casting: human body , human mask, etc.

silicone products: Prosthetic limbs, silicone insoles, silicone doll, sexy doll, etc.

ADDITIONAL INFORMATION
Reproduction of Vertical Surfaces
If a skin mold is required of a vertical object or surface and cannot be made by normal pouring techniques, the catalyzed mixture can be made non flowable by the addition of thixotropic agent.

1. Prepare the original as described earlier.
2. Brush the original with a thin layer of catalyzed mixture. Repeat the operation when the first layer has started to cure, to achieve a coating thickness of >2mm. Leave to cure at
room temperature until the material is tacky.
3. Prepare a new catalyzed mixture of silicone and add 1% by weight of thixotropic additive and mix thoroughly until a paste consistency is reached. De-airing of the mixture is not
required.
4. Using a spatula, cover the coated original with the thixotropic coating until all undercuts are filled; leave to cure for 24 hours at room temperature.
5. Construct a support mold using polyester resin or plaster and allow to set in contact with the silicone coating. Carefully remove the support mold. Peel the rubber off the original
and place in the support mold.

Use at High Temperatures
Some molds produced from condensation cure silicone rubbers can degrade when exposed to temperatures above 150°C (302°F) over a period of time or when totally confined in
storage at high ambient temperatures. This can result in softening and loss of elastic properties.
Resistance to Casting Materials
The chemical resistance of fully cured silicone rubber is excellent, and similar to all condensation cure silicone elastomers. It should be noted however that ultimately, resins and
other aggressive casting materials will attack silicone molds, changing physical properties, surface release and possibly mold dimensions. Molds should be checked periodically during
long production runs.
 

Features
Outstanding release properties High flowability and long working time
High tear strength & tear strength High elasticity, for easy removal of complex replica parts
Can add thixotropic for vertical surface application

Easy for cooperating and demold ,non-oily

Company Information

Dongguan Gangtian Polymer Materials Co.,Ltd, located in Dongguan City, Guangdong Province, China, is a professional leading manufacturer of RTV 2 Liquid Silicone Rubbers. Focusing our Research and Development on innovation, we have been providing performance enhancing solutions to serve the diverse needs of thousands of customers worldwide since the year of 2003. Our main products include RTV 2 mold making series, tinsil and platsil, RTV 2 platsil for products, injection LSR, silicone potting compound, silicone oil, silicone ink, etc. With penetrating Professionalism in technology solutions and Honesty in after service, we GT Polymer Materials Co., Ltd are not only a trustworthy partner but also a good friend to the customers worldwide.Brand Story - Gangtian, founded in 2003 in Dongguan, by Yuanfu Deng, a Chinese chemist and engineer in the field of polymer materials, is a silicone factory brand. "Gang", or port, is a new place near sea for him to cultivate. "Tian", or field, stands for his hometown, a very small village in Hengyang, Hunan Province. Influenced by his parents who were both farmers, he creatively combines the company culture with Eastern wisdom, to work on the vision of "Making a better life with magic silicone rubber". With his efforts and achievements in R & D of silicone rubbers, we have been serving hundreds of domestic and overseas customers with quality materials for more than 15yrs. And now our production capacity reaches to more than 500tons per month. We uphold the core values of "create value for partners" and create value for e-commerce and information service industry through independent innovation and sincere co-op with "honesty, tolerance, innovation and service" as the spirit of enterprise. We always warmly welcome you to join us. Let's go and explore this magic world of silicones!
 

Packaging & Shipping

Packing
1kg/plastic can,  5kg/plastic drum , 20kg/metal drum,  25kg/ plastic drum, 25kg/ metal drum, 200kg/metal drum,
Customized service on package is available.
 

 

 

Shipping
Normal delivery time is within 3-5days with confirmation on payment in our bank.
Please confirm with us if you need an urgent order.

• Shipments by sea, by air, by train, or by truck is available.
• Normal delivery time is within 3-5days with confirmation on payment in our bank.
• Please confirm with us if you need an urgent order.

Shelf life
Twelve (12) months from date of shipment when stored at 25ºC in the original sealed packages.
 

FAQ

Q: Do you have a factory?
A:We have factory in Dongguan. As a leading manufacturer of silicone rubber in China, we are on the liquid silicon rubber market for more than 16 years, depends on our high quality products and best service.

Q: Is a free sample available?

A: Yes. Normally we can offer dear you 500g sample in free of charge.

Q: What's your delivery time like?

A: 3-5 working days after confirming your payment in our bank.

Warm Tips: 1 working day is for our technician to test the cargo and arrange the COA.