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 5999-01-492-0454
NSN 5905-01-540-1094
NSN 6150-01-329-9828
NSN 5945-01-373-4883
NSN 5935-00-871-0389
NSN 5985-01-394-4982
NSN 6645-00-542-1734
NSN 5965-00-330-9672
NSN 5975-00-118-8844
NSN 5855-01-380-9950
NSN 5950-00-258-4445
NSN 4140-01-642-7744