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 5910-01-455-8955
NSN 4140-00-232-9859
NSN 6320-01-227-2648
NSN 5835-00-275-0584
NSN 5990-00-236-8152
NSN 4140-00-365-2531
NSN 6320-01-106-4414
NSN 6320-01-295-9992
NSN 6240-01-215-8485
NSN 6130-01-575-6991
NSN 6135-01-036-3495
NSN 5925-01-180-0082