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 6130-01-400-0736
NSN 6220-01-641-4384
NSN 5950-01-585-1022
NSN 5975-01-642-0838
NSN 6610-01-186-8798
NSN 6240-01-106-2447
NSN 6620-01-375-5724
NSN 5930-01-618-1188
NSN 5910-00-330-6662
NSN 2925-00-856-0115
NSN 5935-00-269-5516
NSN 5920-00-189-7497