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 6220-01-210-4162
NSN 6650-00-379-5434
NSN 6220-00-917-0881
NSN 5960-00-083-2793
NSN 5996-00-904-8350
NSN 6130-01-010-4299
NSN 5985-01-575-8305
NSN 5915-01-611-0106
NSN 5910-01-412-3415
NSN 4140-01-578-9005
NSN 6645-01-381-6084
NSN 6645-00-819-5045