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 5990-00-594-7291
NSN 5950-00-443-1490
NSN 6150-00-466-2892
NSN 6650-01-044-0183
NSN 6240-00-660-8849
NSN 6620-00-149-7557
NSN 5855-01-417-5571
NSN 5910-01-627-3266
NSN 5965-01-620-1182
NSN 6150-00-276-7483
NSN 6320-00-506-2314
NSN 5930-01-353-0253