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 7035-01-004-8819
NSN 6620-01-474-4951
NSN 5960-01-105-8402
NSN 7035-01-442-7947
NSN 5998-01-125-8164
NSN 6645-00-802-7991
NSN 5855-00-151-3853
NSN 2925-01-305-1370
NSN 5920-01-235-0704
NSN 5895-00-338-0118
NSN 6130-01-318-9005
NSN 5935-00-988-5646