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 6220-00-771-6580
NSN 5935-01-100-4927
NSN 7035-00-476-7178
NSN 5975-01-499-1519
NSN 6645-01-631-9789
NSN 5975-01-385-3951
NSN 5975-00-488-1901
NSN 6105-00-168-8638
NSN 5965-00-762-0630
NSN 6110-01-122-5916
NSN 6135-01-448-4680
NSN 5999-00-327-1401