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 5855-01-089-2248
NSN 5935-00-287-5069
NSN 5930-01-160-3470
NSN 6320-01-512-2031
NSN 6145-01-445-9788
NSN 5996-01-534-2175
NSN 2925-01-118-6125
NSN 6320-01-072-2073
NSN 5998-01-439-3800
NSN 5945-00-249-1645
NSN 5925-01-326-9829
NSN 4140-01-198-9990