CAPILENE E 78 EProducts
Carmel Olefins
SILASTIC™ HC-2033-40 Silicone Rubber is a 40 Shore A low compression set and heat resistance silicone rubber. It is suitable for molding parts like O-ring and silicone rubber parts, especially for auto harness connector seal. Its low compression set ensures long-term sealing and waterproof performance for wire harnesses, while its excellent heat resistance provides reliable long-term performance for high-temperature automotive components. SILASTIC™ HC-2033-40 Silicone Rubber can be mixed with SILASTIC™ HC-2032-20 and HC-2033-80 Silicone Rubber to get middle hardness rubber. It can be used for some flame- retardant plastic connector seal. How to Use SILASTIC™ HC-2033-40 Silicone Rubber should be blended with the curing agent using a 2-roll open mill mixing process. For peroxide system, it is recommended to add 1phr SILASTIC™ RC-4 50FD curing agent per 100phr silicone rubber. For Pt catalysts system, it is recommended to add 0.14phr SILASTIC™ RD-9, 0.8phr RD-7 and 0.8phr RD-27 curing agents per 100phr silicone rubber. Ensure sufficient mixing time to achieve uniform material dispersion. The mixing temperature should be controlled, with the 2-roll mill temperature generally advised not to exceed 45°C to avoid scorching. Standard press molding temperature is 170°C, and its cure time depends on the thickness of final products. Post cure condition would be 4 hours at 200°C after molding in most cases, to ensure complete curing, removal of decomposition by-products from peroxides, and to achieve stable performance. Handling Precautions PRODUCT SAFETY INFORMATION REQUIRED FOR SAFE USE IS NOT INCLUDED IN THIS DOCUMENT. BEFORE HANDLING, READ PRODUCT AND SAFETY DATA SHEETS AND CONTAINER LABELS FOR SAFE USE, PHYSICAL AND HEALTH HAZARD INFORMATION. THE SAFETY DATA SHEET IS AVAILABLE ON THE DOW WEBSITE AT DOW.COM, OR FROM YOUR DOW SALES APPLICATION ENGINEER, OR DISTRIBUTOR, OR BY CALLING DOW CUSTOMER SERVICE. Usable Life and Storage Store in the original packaging below 35 degrees for up to 36 months. Packaging Information 20 kg box Limitations This product is neither tested nor represented as suitable for medical or pharmaceutical
Melt Flow Index (MFI) at 230°C / 2.16 kg, density, polymer melting point and tensile strength. The full Technical Data Sheet (TDS) is available on request.
Suited to injection moulding and forming applications such as rigid containers, caps and engineering parts that demand high stiffness and dimensional stability.