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 5925-01-231-5423
NSN 5920-01-268-7258
NSN 6130-00-236-1963
NSN 5965-01-620-4741
NSN 6135-01-050-3194
NSN 5975-01-381-2404
NSN 5910-01-580-6742
NSN 5930-01-616-7597
NSN 5925-00-290-4451
NSN 6135-01-630-3158
NSN 6145-01-003-5323
NSN 6150-00-519-5538