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 6645-00-847-3727
NSN 5999-00-929-0303
NSN 2925-01-466-0892
NSN 5920-01-163-3973
NSN 6610-00-386-4745
NSN 6620-01-132-9678
NSN 6620-01-394-0365
NSN 6620-00-170-5296
NSN 5975-00-446-7875
NSN 6110-01-123-5125
NSN 6610-01-272-8625
NSN 6135-01-049-5980