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 2925-01-208-6638
NSN 6145-01-305-0367
NSN 5990-00-412-4411
NSN 6620-00-375-0393
NSN 5985-00-705-4356
NSN 6620-01-546-4942
NSN 6650-01-642-0367
NSN 5985-01-305-2686
NSN 6220-01-008-7401
NSN 5960-01-294-2397
NSN 6645-00-404-1785
NSN 6150-00-391-1981