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 6240-00-161-8099
NSN 6145-01-645-8129
NSN 6145-01-316-5357
NSN 6110-01-462-1698
NSN 5985-01-474-0027
NSN 6610-01-590-2263
NSN 6650-01-487-7411
NSN 6650-01-435-2994
NSN 5935-01-013-9384
NSN 6110-00-643-4193
NSN 5935-01-372-6029
NSN 6135-00-891-4944