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 5855-01-132-5139
NSN 7035-01-174-1029
NSN 5950-01-655-2506
NSN 6135-01-205-5965
NSN 6220-01-175-9052
NSN 5855-01-472-2554
NSN 5965-01-438-8249
NSN 5835-00-233-6327
NSN 5998-00-491-8004
NSN 5920-01-125-6469
NSN 6135-01-223-3869
NSN 6135-00-448-5642