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 5930-00-371-3772
NSN 5945-01-077-7140
NSN 5905-01-154-0836
NSN 6110-01-322-8585
NSN 6645-01-532-9027
NSN 4140-01-369-6471
NSN 5965-01-597-4868
NSN 5920-00-172-3150
NSN 6650-00-074-2445
NSN 5975-01-634-0678
NSN 5915-01-403-2599
NSN 6645-00-679-8203