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 6610-00-781-4198
NSN 5990-01-388-0252
NSN 6110-00-762-2851
NSN 6150-01-139-0014
NSN 5996-00-986-1122
NSN 5985-01-029-3555
NSN 6240-01-539-6315
NSN 6645-01-389-1970
NSN 6150-01-004-8788
NSN 6645-01-017-3593
NSN 5920-00-410-7849
NSN 6150-01-577-1916