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 6135-01-445-4291
NSN 6220-01-447-1993
NSN 6685-00-922-8326
NSN 6130-01-275-9400
NSN 6110-01-483-4421
NSN 4140-01-322-4591
NSN 6110-00-501-5585
NSN 5925-01-052-6413
NSN 5998-00-624-4790
NSN 5935-01-258-5867
NSN 5975-01-044-0523
NSN 5915-01-540-6150