What is HCR silicone?
Heat Cured Rubber is a silicone elastomer formed of straight chains with very high molecular weight. The system will be cured with either an organic peroxide crosslinker, or a platinum catalyst. HCR offers great temperature and aging resistance.
 

1. High green strength and tensile strength. 
2. Heat stability in continuous use from - 50 to 200°C (can be increased up to 250°C and even up to 300°C using specific additives).
3. Exceptional ageing resistance (even under extreme conditions).
4. Great flexibility of use , wide possibilities for blending with other GT series HCR 
5. Easy pigmentation using GT Silicones Color Master Batches for HCR 
6. Easily extended with silica fillers (quartz type) 
7. A wide range of processing and performance enhancing additives are available (plasticity adjustment, fire resistance improvement, ash cohesion improvement, … ) 
8. Easy to process; no sticky to rolls; easy to demold

Chemical structure
Heat Cured Rubber elastomers are also known as High Temperature Vulcanizing silicone rubber (HTV). They are made from reactive silicone gums, in other words, straight chains, with very high molecular weight macromolecules containing various reactive groups. The most frequently used gums are either partly phenylated or perfluorinated vinylated gums. Various raw materials are added to give additional properties to the HCR e.g. fumed or precipitated silicas with high specific surface area to improve mechanical properties, heat stabilizers and various other additives such as plasticizers or anti-structuring agents. Cross-linking occurs using organic peroxides in polycondensation systems or platinum catalysts in polyaddition systems.
 

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!

20kg/carton, the carton size: 51*31*15.5cm
Customized service on package is available.

• 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.

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 19 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.