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 6105-01-243-1625
NSN 2925-01-243-7736
NSN 5996-01-359-8719
NSN 6320-01-103-1655
NSN 6220-01-481-3827
NSN 5999-01-384-4604
NSN 5985-00-726-2290
NSN 6145-01-407-4786
NSN 6320-01-064-0372
NSN 5935-01-640-9243
NSN 6645-01-433-6999
NSN 6130-01-043-9624