Divers mask usn mark 1 model o
A ring-shaped item whose outer surface is so shaped as to form a seat for the coupling nut and the fitting between which it is assembled. It is designed to be slipped over tubing or hose so that tightening of the coupling nut to the fitting compresses the sleeve against the circumference of the tubing or hose thereby effecting a tight seal between the tubing, or hose fitting and coupling nut.
NSN 5985-01-396-7983
NSN 5895-01-529-0141
NSN 7035-01-565-6132
NSN 7035-01-344-8708
NSN 5925-01-375-2623
NSN 6645-00-766-7935
NSN 6105-01-188-1524
NSN 5855-01-250-2421
NSN 6150-00-306-2020
NSN 6105-00-270-8078
NSN 5999-00-449-1950
NSN 4140-01-228-6543