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 5895-00-357-6309
NSN 5920-01-108-9400
NSN 5985-01-315-1931
NSN 5925-01-305-1965
NSN 5999-00-100-5761
NSN 2925-01-363-5978
NSN 6650-01-616-6235
NSN 6220-00-409-8978
NSN 5905-01-117-1438
NSN 5930-01-285-6727
NSN 5990-01-137-8722
NSN 5975-01-232-9319