Vital Red RTV is the original gasket maker formulated for high temperature and heavy duty applications. It makes reliable \"formed in place\" gaskets that resist cracking, shrinking and migration caused by thermal cycling. Ideal to replace almost any cut gasket. Also use to coats pre-cut gaskets to increase reliability. It is permanently flexible and stable at temperature of between -80F to +650F (-62C to +343C ) intermittent. It is also highly resistant to auto and shop fluids.