Rubber: Vinyl-Methyl Silicone (VMQ) Hot Air Resistant Low Compression Set, 70 to 80 Type A Hardness for Seals in Hot Air Systems AMS7267H

This specification covers a silicone (VMQ) rubber in the form of molded rings. These rings have been used typically as sealing rings for service from -65 to +260 °C (-85 to +500 °F) in contact with air, but usage is not limited to such applications. The cross-section of such rings is usually not over 0.275 inch (6.98 mm) in diameter or thickness.