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 6135-01-074-8220
NSN 5999-01-460-2301
NSN 5855-00-548-4742
NSN 5905-01-004-9961
NSN 6650-00-834-9062
NSN 6150-01-135-4482
NSN 7035-00-731-8729
NSN 5965-01-364-0122
NSN 5915-00-225-4078
NSN 5855-01-308-0955
NSN 5895-01-154-4729
NSN 5975-01-243-1108