The rubber seal is the sealing face of the coupling head. It is the part that hardens, tears and lets the joint leak, and it is renewed on its own rather than replacing the whole coupling.

This category lists 8 Büyükdemir references cross-referenced against 11 original equipment numbers. The cross-reference tables cover DAF, Iveco and MAN parts.

Most looked-up references in this group: Rubber Seal 5-2058, Rubber Repair (For Standard Coupling Head) / Gunni für Standard Kupplungskopf 5-2055, Rubber Repair (For Air Coupling With Line Filter) 5-2056.

Manufactured by Büyükdemir Otomotiv in Istanbul, a producer of truck and trailer air system parts since 1957.