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 5999-01-576-9836
NSN 5915-01-573-0218
NSN 5855-01-147-4785
NSN 5985-01-633-8133
NSN 2925-00-450-7783
NSN 5998-01-444-8136
NSN 5965-01-188-4507
NSN 6645-00-838-6939
NSN 5920-01-004-2602
NSN 5925-00-255-2048
NSN 5945-01-318-0323
NSN 7035-01-144-3345