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 6650-01-040-8338
NSN 5925-01-423-7455
NSN 5975-01-283-4085
NSN 5975-01-408-6380
NSN 5965-01-509-9212
NSN 5925-01-627-8681
NSN 5930-01-331-0656
NSN 5905-01-512-1898
NSN 5925-00-439-0797
NSN 6320-01-607-1491
NSN 6220-01-624-9911
NSN 5965-01-141-6485