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 5975-00-338-9072
NSN 4140-01-300-5636
NSN 2925-00-839-6815
NSN 6685-01-556-4246
NSN 5985-01-558-3150
NSN 6220-00-394-5762
NSN 4140-00-226-9807
NSN 6130-01-467-2561
NSN 5855-01-564-6511
NSN 6110-01-507-0131
NSN 7035-00-782-7046
NSN 5905-00-424-3099