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 6320-01-514-6141
NSN 5998-00-143-0485
NSN 5920-00-432-1515
NSN 6240-01-391-0399
NSN 5905-01-312-2597
NSN 5990-00-518-3195
NSN 6645-01-023-8724
NSN 5895-00-896-9593
NSN 6620-00-115-9050
NSN 5960-01-081-0400
NSN 5935-01-516-8062
NSN 6645-01-131-4328