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 5999-01-228-2244
NSN 5920-01-010-7101
NSN 6145-00-508-4710
NSN 6645-01-519-3007
NSN 5855-00-150-1820
NSN 5835-01-283-9691
NSN 2925-01-144-7106
NSN 5915-01-270-8103
NSN 6150-00-923-4476
NSN 6620-01-627-0478
NSN 5990-01-599-7106
NSN 5965-00-103-5000