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 2925-01-426-3410
NSN 6610-00-021-2259
NSN 6685-00-482-9477
NSN 6110-00-705-5863
NSN 6620-01-251-8856
NSN 5905-00-144-3585
NSN 6620-01-364-0195
NSN 5975-01-566-4905
NSN 6220-01-067-8142
NSN 5990-01-344-9118
NSN 5905-01-556-6119
NSN 6150-00-518-1402