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 6135-01-367-6203
NSN 5945-01-479-8352
NSN 5945-01-455-3571
NSN 5985-00-762-0591
NSN 6645-00-758-4567
NSN 5990-01-221-0609
NSN 5985-01-422-1552
NSN 5998-01-523-9136
NSN 5910-01-463-7293
NSN 6105-00-489-1305
NSN 6240-01-574-0261
NSN 4140-01-207-0452