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 6110-00-402-0055
NSN 5855-01-384-4914
NSN 7035-01-008-5568
NSN 5985-01-231-3152
NSN 4140-01-657-6565
NSN 6150-01-108-8284
NSN 5998-00-090-7303
NSN 6145-01-483-1292
NSN 5935-01-281-6446
NSN 5985-01-238-8724
NSN 5920-01-532-0031
NSN 4140-00-307-2732