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 5998-00-138-2718
NSN 6645-00-580-9605
NSN 5915-01-226-3650
NSN 6645-01-371-1632
NSN 6320-01-132-2746
NSN 5950-00-845-5706
NSN 5998-00-285-3186
NSN 5855-01-566-4032
NSN 6145-01-092-4075
NSN 7035-01-445-3563
NSN 4140-00-252-7734
NSN 5855-01-312-5160