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 6145-00-434-1681
NSN 6130-00-426-0058
NSN 6240-00-917-6916
NSN 5935-01-551-1343
NSN 6650-00-170-5095
NSN 5990-01-061-5618
NSN 5930-01-358-8175
NSN 6650-00-597-7313
NSN 5965-00-886-8511
NSN 6645-01-227-2036
NSN 5960-00-181-0640
NSN 5915-01-115-2953