Description

Silicone Rubber CAS NO 63394-02-5 is a high-performance elastomer derived from cross-linked silicone polymers, offering exceptional thermal stability, flexibility, and chemical resistance. This material is critical for applications demanding reliability under extreme environmental conditions, from sub-zero cold to intense heat. It is essential for manufacturers in the automotive, aerospace, medical device, electronics, and construction industries seeking durable, insulating, and versatile sealing and molding solutions.

Application

• Automotive Gaskets & Seals: Used for engine gaskets, O-rings, and hose assemblies due to excellent heat and oil resistance.
• Medical Device Components: Ideal for tubing, seals, and respiratory masks because of its biocompatibility, sterilizability, and softness.
• Electronics Encapsulation & Keypads: Protects sensitive components from moisture, dust, and vibration; used for durable, tactile keypad covers.
• Industrial Molding & Extrusions: Serves in creating custom profiles, rollers, and seals for machinery and food processing equipment.
• Aerospace Insulation & Sealing: Applied in aircraft for wire insulation, window seals, and thermal barrier components.
• Consumer Goods & Cookware: Found in bakeware, utensils, and appliance seals for its non-stick and heat-resistant properties.

Basic Information

Product Name	Silicone Rubber
CAS No.	63394-02-5
Molecular Formula	(C2H6OSi)n • (C2H6O2Si)m
Molecular Weight	Varies (Polymer)
Synonyms	Polydimethylsiloxane, PDMS Rubber; Silicone Elastomer; Methyl Silicone Rubber; Dimethyl Silicone Rubber; High Consistency Rubber (HCR); Liquid Silicone Rubber (LSR); Silastic® (Trade Name); VMQ (ASTM D1418 designation)
EINECS	Contact for details

Quality Control

Our Silicone Rubber is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Quality is verified through testing of key parameters including viscosity, hardness (Shore A), tensile strength, elongation, and compression set. We provide full traceability and Certificates of Analysis (COA) are available for all shipments. Production can comply with relevant standards such as FDA CFR 21, USP Class VI, ISO 10993, and REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong acids, bases, and oxidizing agents. For long-term storage, ensure the material is kept in its original, unopened packaging to prevent contamination.

Specification

Item	Specification
Appearance	Colorless to translucent solid or viscous gum
Hardness (Shore A)	20 - 80
Tensile Strength	≥ 5 MPa
Elongation at Break	≥ 200 %
Tear Strength	≥ 15 kN/m
Specific Gravity	0.95 - 1.20
Volatile Content	≤ 1.0 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.