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 6135-01-365-2707
NSN 5925-01-415-3084
NSN 6130-00-780-8094
NSN 2925-00-720-3948
NSN 5950-01-143-5419
NSN 5905-01-069-4994
NSN 6150-01-338-4900
NSN 4140-01-519-9343
NSN 5950-01-359-9531
NSN 6320-00-270-8222
NSN 6620-00-104-6937
NSN 6105-01-340-5242