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 6240-01-601-2459
NSN 6110-00-394-7187
NSN 5999-01-119-4109
NSN 6135-01-319-5567
NSN 5945-01-301-7520
NSN 5945-00-019-7550
NSN 6610-01-220-8126
NSN 5998-00-957-0021
NSN 5835-00-275-0584
NSN 5945-01-400-2304
NSN 5990-01-533-1347
NSN 6650-01-584-3208