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 6220-00-823-6688
NSN 5975-00-299-1202
NSN 5905-00-264-8851
NSN 5998-00-428-1705
NSN 6150-01-195-1474
NSN 5905-00-023-7357
NSN 6150-01-394-2263
NSN 5985-01-428-9394
NSN 5990-01-041-8008
NSN 5945-01-029-3871
NSN 4140-00-005-4574
NSN 6320-01-399-6177