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 5965-00-929-9415
NSN 6240-01-585-3611
NSN 5910-01-100-4017
NSN 5999-00-504-7889
NSN 5910-00-624-5541
NSN 5930-01-275-2177
NSN 5910-01-512-0626
NSN 6620-00-147-6034
NSN 6150-01-280-4552
NSN 4140-01-127-6112
NSN 6135-01-196-7399
NSN 5930-00-146-1300