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 7035-00-166-0339
NSN 6135-01-321-1373
NSN 5905-01-296-6770
NSN 4140-00-952-2287
NSN 6105-01-089-1325
NSN 5975-00-964-4510
NSN 5975-00-938-3794
NSN 5935-01-076-4525
NSN 5975-00-788-2130
NSN 5998-01-575-5274
NSN 5998-00-905-6220
NSN 6130-01-519-3832