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 4140-01-383-7274
NSN 5975-01-303-5095
NSN 6645-01-615-8359
NSN 7035-00-523-7492
NSN 6320-01-358-8069
NSN 6110-01-012-1759
NSN 5990-00-681-1675
NSN 5965-01-175-4839
NSN 6650-01-296-0883
NSN 6685-00-998-2754
NSN 6110-01-469-6379
NSN 5975-00-128-3222