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 5910-01-328-5844
NSN 5910-01-329-8689
NSN 5920-00-672-5583
NSN 6650-01-183-0711
NSN 5965-01-315-5764
NSN 5965-01-088-1761
NSN 5855-00-688-9954
NSN 4140-00-142-2491
NSN 2925-01-330-2988
NSN 6130-01-384-3290
NSN 6650-00-983-6722
NSN 6240-01-606-9549