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 5975-01-452-9036
NSN 5905-01-446-5992
NSN 5965-01-022-3298
NSN 4140-00-171-1387
NSN 7035-01-027-8569
NSN 6240-01-210-0164
NSN 6645-00-964-3020
NSN 6610-00-398-0104
NSN 6150-01-322-7800
NSN 5910-01-228-8732
NSN 5998-00-078-0467
NSN 6650-01-530-3763