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 5925-01-339-5423
NSN 4140-00-977-6297
NSN 5905-01-535-7145
NSN 7035-01-131-1168
NSN 5990-01-136-4068
NSN 5945-00-300-0903
NSN 6240-01-598-3969
NSN 5998-01-357-7591
NSN 5855-00-149-0766
NSN 5905-01-490-6339
NSN 6145-01-602-9331
NSN 5990-01-443-2931