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 5975-01-055-6866
NSN 5910-00-660-9464
NSN 6145-01-462-8380
NSN 6685-01-437-0209
NSN 5945-00-603-6600
NSN 6105-00-273-1106
NSN 5935-01-232-0542
NSN 2925-00-473-9532
NSN 6135-00-377-9165
NSN 6650-00-539-7298
NSN 6650-01-277-8273
NSN 6220-01-363-9713