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 6645-01-331-5674
NSN 6130-01-474-5190
NSN 6135-01-441-0518
NSN 5996-01-414-9827
NSN 5915-00-453-5982
NSN 6105-01-634-0322
NSN 6685-00-627-6102
NSN 6105-00-710-4471
NSN 5905-01-268-9371
NSN 5920-01-232-1453
NSN 5975-01-471-2328
NSN 5925-01-132-8568