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 6240-00-312-0636
NSN 6320-01-616-0843
NSN 6220-01-301-3662
NSN 5945-00-971-4282
NSN 5835-01-645-2892
NSN 5999-01-025-6686
NSN 5905-00-538-0469
NSN 6130-01-264-7239
NSN 5998-01-649-2699
NSN 5895-00-731-4935
NSN 6610-00-995-9422
NSN 5950-01-583-6563