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 6240-01-204-1918
NSN 5910-00-266-8438
NSN 6220-01-397-2536
NSN 5905-01-425-7766
NSN 5915-01-007-3265
NSN 6135-01-523-3198
NSN 5915-01-364-4882
NSN 7035-01-594-9198
NSN 6645-00-183-8812
NSN 7035-00-150-2379
NSN 5835-00-173-4456
NSN 5855-00-436-3852