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 6650-00-788-1461
NSN 5999-00-527-8767
NSN 6135-00-461-3590
NSN 5998-00-845-4873
NSN 5975-01-141-6889
NSN 6150-01-063-6483
NSN 5945-00-887-5287
NSN 5975-01-004-3656
NSN 5930-01-576-2251
NSN 6650-00-692-1541
NSN 5835-01-479-7908
NSN 6620-00-005-8612