Our largest selling anaerobic pipe sealant, iPipe™ 67™, is an excellent choice for a wide range of sealing applications and different size fittings. Because it has a hybrid of Dr. Gerhardt Werber’s original 1974 patented cure system, it delivers the kind of upgraded performance you would expect, 40 years later. This slightly sticky white paste will provide an immediate seal in many applications, and is almost 50% cured in only 2 hours.