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 6620-00-079-0311
NSN 6135-01-242-2304
NSN 5998-00-275-2145
NSN 5985-01-290-2615
NSN 5965-00-630-7872
NSN 5920-01-241-3227
NSN 5935-01-007-0134
NSN 4140-01-217-1511
NSN 5905-01-542-8614
NSN 6130-01-207-4493
NSN 5920-01-090-4363
NSN 5985-01-239-4181