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 5999-01-400-3590
NSN 5895-00-170-4568
NSN 5998-00-400-8804
NSN 5998-01-012-9679
NSN 5855-00-494-9581
NSN 5935-01-634-0668
NSN 6130-00-369-0624
NSN 5895-01-382-9624
NSN 5935-01-152-1241
NSN 6105-01-412-6549
NSN 5905-01-358-8388
NSN 6220-00-050-1854