They feature neoprene tubes and covers that are oil-and-abrasion resistant. The joints are reinforced by nylon fabric and carbon steel body-wire and are sold with galvanized carbon-steel retaining rings. Arch-support rings stabilize the joint under vacuum and ID sizes 2-through 24-in. are available.
Garlock Sealing Tech., 1666 Division St., Palmyra, NY 14522, (800) 448-6688, garlock.net/index.jsp