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 6240-01-298-4643
NSN 5835-01-017-7486
NSN 2925-00-263-2714
NSN 5855-01-283-3730
NSN 6645-00-884-5845
NSN 6130-01-146-4687
NSN 5925-01-013-8330
NSN 6610-00-296-5007
NSN 6645-01-385-7033
NSN 5999-01-429-2853
NSN 6105-01-072-1526
NSN 5905-01-429-1256