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 5990-00-371-6590
NSN 6320-01-054-3046
NSN 5998-01-558-9598
NSN 5855-00-532-0025
NSN 5895-01-543-7291
NSN 5855-00-138-2386
NSN 6145-00-202-8570
NSN 5999-00-705-3980
NSN 7035-01-350-3978
NSN 5945-01-146-5464
NSN 6650-01-068-7720
NSN 6220-01-057-2389