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 5960-00-997-0502
NSN 6130-00-229-0524
NSN 6105-01-229-2464
NSN 5935-00-298-2004
NSN 7035-00-392-5417
NSN 6650-01-059-5804
NSN 6320-01-039-5891
NSN 6150-01-430-3601
NSN 5910-00-375-5045
NSN 6620-01-611-7907
NSN 5990-01-208-1101
NSN 6645-01-535-7136