Ultra-Seal is Mr. Gasket premium valve cover gasket material. It's manufactured from a high density cork and rubber blend with a black latex coat applied to the outside to help seal minor flange irregularites and eliminate oil leakage. It creates a positive seal by controlled swelling of the gasket material when exposed to hot oil. For original equipment replacement, high performance street, drag race and oval track use. Sold as a pair, these gaskets are .187 inch thick. They fit both 1987-2002 Gen I Chevrolet Small Blocks as well as 1992-1997 Gen II LT-Based Small Blocks.

Features

Manufactured from high-density cork /rubber blend gasket material

A black latex rubber coating is applied to outside of gasket to help seal minor flange irregularities and eliminate the possibility of oil leakage

Creates a positive seal by controlled swelling of the gasket material when exposed to hot engine oil

For OE replacement, high performance street, drag race and oval track

.187" thick