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 6320-01-582-6668
NSN 6150-01-475-8481
NSN 5965-01-095-1926
NSN 6105-00-418-9648
NSN 6150-00-827-0081
NSN 6110-01-457-5822
NSN 5925-01-248-3797
NSN 6135-01-231-4809
NSN 5895-01-500-1523
NSN 6130-00-407-5645
NSN 5996-01-141-6916
NSN 6650-01-126-8552