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 5975-01-149-4641
NSN 6150-01-121-4644
NSN 6145-01-541-1522
NSN 6220-01-149-0144
NSN 6130-01-435-7169
NSN 6220-00-941-4007
NSN 5935-01-585-7018
NSN 5855-00-149-0766
NSN 6130-00-291-4877
NSN 5930-01-621-2686
NSN 5975-00-897-9959
NSN 5975-01-425-8478