écrou d'étanchéité

OBS: JEDE 72 235.

OBS: FIST. Nut pipe seal (42-31-870). A hexagonal nut containing internal tapered pipe thread. It has raised undetachable sealing member on the face of the bearing surface. The item, when installed, provides a method of sealing the connection at the boss or the mating surface. (USSU-6-72,454).