Cometic Chevrolet Mark-IV Big Block V8 Rear Main Seal - 2 Piece

COMETIC Viton is a fluoroelastomer, or high end rubber. Top of the scale for heat resistance, chemical resistance and durability.

• All of Cometic's gaskets and seals have been tested on both the street and the track as well as vigorous Dyno shakedowns
• Durability