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 5905-01-307-5705
NSN 5920-01-291-1330
NSN 5835-01-459-5383
NSN 6105-01-531-4160
NSN 6650-01-381-7296
NSN 6320-01-160-8578
NSN 5950-00-920-7146
NSN 6135-01-512-8740
NSN 6610-00-371-5953
NSN 6220-01-461-9180
NSN 4140-01-005-0154
NSN 6620-01-185-0811