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 4140-01-411-0460
NSN 2925-01-068-3844
NSN 2925-01-391-9247
NSN 6610-01-021-5068
NSN 5960-01-141-6489
NSN 6320-00-483-0451
NSN 6220-01-073-1460
NSN 5965-00-909-5345
NSN 6135-01-036-3495
NSN 6610-01-023-1918
NSN 5935-00-293-1863
NSN 5985-00-205-2922