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 5935-01-535-6153
NSN 6645-00-692-2809
NSN 6105-01-152-2800
NSN 6240-00-454-9293
NSN 6150-01-139-3373
NSN 5985-01-206-4729
NSN 5999-00-468-7992
NSN 5895-01-431-7349
NSN 4140-00-137-9633
NSN 6650-01-281-4651
NSN 5895-01-157-3077
NSN 5975-01-336-4353