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 6240-01-080-9620
NSN 2925-01-233-8545
NSN 6240-00-922-1021
NSN 6150-00-009-6011
NSN 2925-00-483-9357
NSN 6620-01-184-7384
NSN 6610-01-340-1761
NSN 6145-01-052-9341
NSN 4140-00-155-8012
NSN 5855-00-761-6559
NSN 5935-00-062-9423
NSN 5935-01-116-7576