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 6150-01-229-7638
NSN 6320-01-343-8191
NSN 6150-01-099-6797
NSN 5985-00-615-9766
NSN 5996-01-069-2370
NSN 6130-00-153-1338
NSN 5965-01-142-1807
NSN 5945-01-390-2672
NSN 5925-01-587-3500
NSN 5930-01-224-7410
NSN 5925-01-430-0026
NSN 6650-00-618-6610