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 2925-01-197-7864
NSN 6220-01-195-8583
NSN 6240-01-349-8766
NSN 6150-01-232-4165
NSN 5998-01-492-9337
NSN 5975-00-081-2171
NSN 5905-00-277-7439
NSN 6220-00-479-9171
NSN 5895-01-095-4291
NSN 5935-01-092-1701
NSN 5965-01-560-8572
NSN 5895-01-336-9210