Elastomer: Fluorocarbon (FKM) Rubber High-Temperature - Fluid Resistant Low Compression Set / 70 to 80 Type A Hardness For Products in Fuel Systems and Specific Engine Oil Systems
Rubber: Fluorocarbon (FKM) High Temperature/Fluid Resistant Low Compression Set/ 85 to 95 Hardness For Seals In Fuel Systems and Specific Engine Oil Systems