Cometic - C5672
Rear Main Seal - 2-Piece - Viton - 400 Block - Small Block Chevy - Each
Chevrolet 400 Gen-1 Small Block V8 Viton Rear Main Seal, 2 Piece, Aluminum 400 Sprint
COMETIC Viton is a fluoroelastomer, or high end rubber. Top of the scale for heat resistance, chemical resistance, and durability. This rear main seal is for wet and dry sump applications.