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 5999-01-607-7808
NSN 6145-00-259-6946
NSN 6135-01-535-2307
NSN 5925-00-904-5763
NSN 5965-00-839-0302
NSN 6110-01-209-9964
NSN 5999-01-275-4926
NSN 6610-00-465-3841
NSN 6220-00-878-7301
NSN 5905-01-012-3995
NSN 6610-01-381-3181
NSN 5925-00-949-2966