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 5930-00-503-4704
NSN 5930-01-365-0388
NSN 6240-01-071-0484
NSN 5915-00-162-5942
NSN 6135-00-660-8654
NSN 5950-01-378-7042
NSN 6645-01-422-9672
NSN 6130-01-331-5096
NSN 5975-00-567-2766
NSN 5930-00-984-7597
NSN 5835-01-384-3206
NSN 5975-01-447-3768