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 5915-01-460-4392
NSN 5855-01-423-1768
NSN 5965-00-424-9636
NSN 5905-01-615-0965
NSN 6685-01-462-5361
NSN 5915-01-633-9845
NSN 6685-01-655-6321
NSN 5945-01-643-3510
NSN 5930-01-421-4471
NSN 2925-01-161-2325
NSN 6220-01-341-5322
NSN 5999-01-292-3024