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 6240-01-301-1084
NSN 5925-00-003-4722
NSN 5915-01-180-2870
NSN 5965-00-482-7945
NSN 5915-01-297-2872
NSN 7035-00-312-3055
NSN 5965-01-660-5281
NSN 6110-01-470-0153
NSN 6130-00-962-0510
NSN 6220-01-297-5645
NSN 5960-01-526-3843
NSN 5920-01-147-5652