Silicone Rubber
General Properties
Durometer Range (Shore A) | 30-90 |
Tensile Strength Range (P.S.I / MPA) | 200-1500 / 1.4-10.2 |
Elongation (Max. %) | 700 |
Compression Resistance | Good |
Energy Return | Good |
Abrasion Resistance | Moderate to Poor |
Tear Resistance | Poor |
Solvent Resistance | Poor |
Oil Resistance | Moderate to Poor |
Low Temperature Use (C°) | -50° to -100° |
High Temperature Use (C°) | Up to 250° |
Aging Weather Conditions - Sunlight | Excellent |
Adhesion to Metals | Good |
Properties
Silicone rubber material can be compounded in different ways to suit many applications. Silicone can be compounded to achieve tensile strengths up to 1500 PSA and tear resistance up to 200 pounds. It also has good compression set and flexibility properties and moderate resistance to solvents. Silicone has excellent heat resistance and good release properties. It also exhibits extreme low-temperature properties and high resistance to oxidation and ozone attack. In general, silicones are affected by most concentrated solvents, oils, acids, and dilute sodium hydroxide.
Compression Set: When a silicone rubber product is subjected to compression under heated conditions, the recovery from compression deformation becomes an important consideration for these materials. Unlike most organic elastomers like EPDM and neoprene, the compression set of silicone rubber is consistent over a wide temperature range from -60°C to +250°C. When using silicone material to make molded products that require low compression set, it is especially recommended to choose an appropriate curing agent and post-curing process.
Compression Set: When a silicone rubber product is subjected to compression under heated conditions, the recovery from compression deformation becomes an important consideration for these materials. Unlike most organic elastomers like EPDM and neoprene, the compression set of silicone rubber is consistent over a wide temperature range from -60°C to +250°C. When using silicone material to make molded products that require low compression set, it is especially recommended to choose an appropriate curing agent and post-curing process.