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 6150-00-058-1333
NSN 5925-00-433-1966
NSN 5905-01-504-5437
NSN 6240-01-432-5092
NSN 5935-01-445-6725
NSN 5975-01-339-0101
NSN 2925-00-137-1209
NSN 6105-01-350-2117
NSN 5935-01-491-1513
NSN 6320-01-513-9166
NSN 5960-01-197-2759
NSN 6645-00-435-5610