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 5925-01-552-0144
NSN 6110-00-958-3794
NSN 6320-01-017-5274
NSN 5996-01-525-3180
NSN 6645-01-344-1992
NSN 6320-01-487-0336
NSN 6685-01-523-9467
NSN 6645-01-253-1950
NSN 6110-01-036-0794
NSN 5905-00-587-9510
NSN 5930-01-432-2053
NSN 6110-01-004-5451