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 6150-01-632-7285
NSN 5920-00-752-3081
NSN 6320-01-103-6218
NSN 7035-00-574-4223
NSN 4140-01-104-4727
NSN 6130-01-336-7251
NSN 6320-00-894-1644
NSN 5935-01-572-8612
NSN 6685-01-602-7881
NSN 6645-00-329-2484
NSN 7035-01-386-5722
NSN 6145-01-327-3328