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 5920-00-430-0093
NSN 6685-01-227-2219
NSN 6150-01-030-1309
NSN 6150-00-018-8506
NSN 5935-01-502-5588
NSN 5905-00-706-7452
NSN 5930-01-099-7073
NSN 6130-00-639-0666
NSN 6645-01-510-3496
NSN 6620-01-646-8593
NSN 5999-00-243-6500
NSN 6145-00-076-9324