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 6220-01-180-7386
NSN 5945-00-476-1401
NSN 5910-01-276-6252
NSN 5985-00-140-7407
NSN 5975-01-533-6276
NSN 5930-01-153-0395
NSN 5945-01-640-7097
NSN 5920-01-191-6321
NSN 5945-01-137-6380
NSN 5920-01-499-1255
NSN 5985-00-636-8689
NSN 5935-01-142-2194