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 6220-01-195-1793
NSN 6105-01-154-6960
NSN 5935-01-568-2618
NSN 5915-01-193-1043
NSN 2925-00-008-5485
NSN 5930-01-510-3527
NSN 5985-01-197-9715
NSN 6650-00-469-2218
NSN 5855-01-203-4719
NSN 6645-00-133-7823
NSN 5990-01-373-1465
NSN 6220-01-320-9490