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 5935-01-249-3102
NSN 6240-01-606-8919
NSN 6130-01-095-3169
NSN 6135-01-348-8264
NSN 6645-01-509-7326
NSN 6110-01-384-3913
NSN 5930-01-069-2776
NSN 5965-01-508-7940
NSN 5998-00-134-0897
NSN 5975-00-413-4428
NSN 6145-01-373-0471
NSN 2925-01-236-3547