The item has four holes in it
A circular shaped item designed to be installed in a specially prepared groove or counterbore to provide a low pressure seal. It may be supplied in various cross-sectional shapes and is cut through at one point to allow for installation and fitting. Excludes items whose primary function is to provide sealing, wiping, or wearing surface capabilities for piston configurations. See also ring, piston and ring, wiper.
Classification: Gaskets,washers & other seals
NSN 7035-00-523-7492
NSN 4140-01-248-9168
NSN 2925-01-197-7864
NSN 5835-01-442-6482
NSN 6150-00-984-1892
NSN 6685-01-331-1073
NSN 5895-00-186-8572
NSN 6135-01-163-0332
NSN 5920-01-479-0867
NSN 6320-00-194-4252
NSN 6320-01-088-1109
NSN 6620-01-416-1757