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 4140-01-145-6415
NSN 7035-00-631-3782
NSN 6650-01-417-9115
NSN 5905-01-208-0265
NSN 5935-01-171-9814
NSN 5975-01-615-8059
NSN 5915-01-365-3651
NSN 4140-01-343-7302
NSN 4140-00-179-3008
NSN 6645-01-446-5419
NSN 6220-00-052-7243
NSN 5965-00-452-0967