Heavier Sealants are injected from the sealant injection fittings in the course of an emergency every time a critical seal is needed. The seat ring shall have two Principal leap seals having a fire-Protected graphite ring. The stem shall have a minimum of 2 primary lip seals or U or https://bookmarkbirth.com/story19732248/new-step-by-step-map-for-camlock-fittings