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 6320-01-569-2672
NSN 6650-00-043-5850
NSN 2925-01-415-0264
NSN 5905-00-574-8084
NSN 6145-01-156-8828
NSN 5975-01-277-8257
NSN 6320-00-925-0558
NSN 6610-01-510-2302
NSN 5965-01-523-5998
NSN 5855-01-620-0958
NSN 5945-01-604-6595
NSN 5990-01-262-7981