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 5835-01-167-1824
NSN 6145-00-343-5967
NSN 5990-01-034-2390
NSN 5990-00-936-3947
NSN 6645-01-220-2838
NSN 6645-01-196-8616
NSN 5975-01-363-9453
NSN 5855-01-505-3103
NSN 6620-01-130-2626
NSN 5835-00-957-3565
NSN 7035-00-497-8784
NSN 5920-00-518-1496