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 6150-01-461-9281
NSN 5975-01-481-3328
NSN 5925-01-547-4304
NSN 4140-00-116-1022
NSN 6610-00-077-3172
NSN 5975-00-010-9338
NSN 6130-01-258-5565
NSN 5998-01-590-9355
NSN 6145-01-459-8150
NSN 5915-00-902-7565
NSN 5999-01-477-2828
NSN 5998-01-261-4862