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 5835-01-224-2792
NSN 5975-00-401-5365
NSN 5855-00-915-7942
NSN 5895-00-008-8272
NSN 5945-00-499-7237
NSN 5965-01-322-8136
NSN 7035-01-489-5679
NSN 2925-01-567-8027
NSN 6135-00-967-3112
NSN 6320-01-495-0306
NSN 6650-01-463-6495
NSN 6135-01-317-6021