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 5905-00-244-1663
NSN 5950-00-149-0486
NSN 5920-00-281-2488
NSN 6135-00-209-6918
NSN 5999-00-216-7431
NSN 6110-00-436-5462
NSN 6130-01-292-6458
NSN 5960-00-411-1713
NSN 6145-00-450-1947
NSN 5905-01-047-6851
NSN 6620-00-780-7786
NSN 5975-00-551-3152