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 5905-01-500-2135
NSN 5925-01-444-2746
NSN 6240-00-896-6334
NSN 5998-00-878-8877
NSN 6320-01-425-1417
NSN 5999-00-233-6366
NSN 7035-01-227-2546
NSN 6685-00-104-7149
NSN 5965-00-578-8931
NSN 6220-01-589-6344
NSN 5935-01-593-1092
NSN 6130-00-525-9975