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 2925-01-085-0691
NSN 6240-01-370-9790
NSN 6650-00-952-4500
NSN 6240-00-836-4980
NSN 6620-01-242-9247
NSN 5998-01-499-3991
NSN 6145-01-572-3992
NSN 5905-01-462-9598
NSN 6110-00-144-6763
NSN 5925-00-906-7838
NSN 5925-00-822-6822
NSN 5910-01-169-2367