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 5920-01-192-7975
NSN 5835-00-173-4456
NSN 6145-00-805-3354
NSN 5915-01-499-2205
NSN 5999-01-262-9886
NSN 5855-01-173-0808
NSN 4140-01-466-5808
NSN 4140-01-659-3557
NSN 2925-00-071-4197
NSN 6110-00-325-4519
NSN 6320-01-283-1300
NSN 5930-00-636-8888