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 6320-00-725-0754
NSN 5930-01-115-3701
NSN 5905-00-787-6280
NSN 6220-00-164-5481
NSN 5910-01-341-1920
NSN 5920-01-401-5315
NSN 6130-01-072-6869
NSN 6685-01-658-2328
NSN 5960-01-025-9388
NSN 6610-00-239-2374
NSN 6145-01-300-8414
NSN 5990-01-529-8433