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 6610-01-554-4146
NSN 5925-00-251-2036
NSN 6135-00-871-3646
NSN 5910-00-202-1056
NSN 5910-01-338-1974
NSN 5998-01-332-5195
NSN 6240-00-227-0135
NSN 5998-01-595-4598
NSN 5895-01-330-4870
NSN 7035-01-210-5111
NSN 4140-01-454-6659
NSN 6130-01-571-7932