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 6145-00-170-6467
NSN 7035-01-453-3601
NSN 5996-01-019-3960
NSN 5910-01-479-8522
NSN 5985-01-100-3471
NSN 5990-00-226-1152
NSN 5998-00-771-9059
NSN 5935-01-365-0256
NSN 5998-00-450-8990
NSN 5935-00-134-5747
NSN 5985-01-595-2224
NSN 6650-01-464-3545