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 6650-00-342-6447
NSN 6135-01-468-2970
NSN 6220-01-634-0660
NSN 5950-01-505-9406
NSN 5985-01-450-4482
NSN 5930-00-446-8793
NSN 6645-01-142-2416
NSN 5975-01-495-8285
NSN 5930-01-617-7623
NSN 5999-01-338-3808
NSN 5905-00-017-9771
NSN 6150-01-101-8887