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 5920-00-357-0260
NSN 5945-00-723-2091
NSN 5945-01-592-8566
NSN 6620-00-273-8735
NSN 5855-00-688-9954
NSN 5935-01-578-7390
NSN 6320-01-433-3953
NSN 6145-01-337-3408
NSN 5945-01-599-4910
NSN 5998-01-499-8987
NSN 4140-00-248-5679
NSN 5996-00-058-8053