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 6320-01-444-7340
NSN 5905-01-471-6199
NSN 6150-01-119-5624
NSN 5935-01-657-1626
NSN 6240-01-433-9410
NSN 2925-00-878-2196
NSN 6240-01-221-1378
NSN 5910-01-283-2431
NSN 4140-00-471-0179
NSN 5999-00-866-5395
NSN 6110-01-459-7709
NSN 5935-01-223-6533