Item must comply with requirements of defense supply center philadelphia production standard no. Po0004nrp
A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6110-01-501-5764
NSN 6645-01-400-1137
NSN 5990-00-625-2560
NSN 6320-00-450-7014
NSN 6685-00-453-9357
NSN 7035-00-997-6212
NSN 6105-00-260-6700
NSN 5975-01-314-3782
NSN 5895-01-116-7728
NSN 6145-01-036-9262
NSN 5945-01-270-2197
NSN 6110-01-281-3749