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 5999-00-044-0485
NSN 5915-00-486-9168
NSN 5998-00-111-3180
NSN 5965-01-190-7391
NSN 6105-01-412-0399
NSN 5950-01-422-2924
NSN 5935-01-364-0114
NSN 5965-00-532-3284
NSN 6135-01-100-3593
NSN 5910-00-901-9488
NSN 5965-01-265-6814
NSN 2925-01-468-7073