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 4140-00-350-5446
NSN 5895-01-563-6718
NSN 5975-00-971-8863
NSN 5985-01-005-8287
NSN 5895-01-466-0306
NSN 2925-01-052-0636
NSN 6130-01-581-2614
NSN 6135-01-526-6530
NSN 5835-00-917-7344
NSN 6220-00-979-0177
NSN 5990-01-485-0260
NSN 5975-01-195-6760