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 4140-00-078-9357
NSN 6130-01-604-7594
NSN 5935-01-117-4320
NSN 5998-01-450-9411
NSN 6320-00-164-4087
NSN 6150-01-077-5938
NSN 6135-01-426-8282
NSN 7035-00-117-0418
NSN 6150-01-013-6726
NSN 5925-01-237-1044
NSN 5965-01-170-9891
NSN 6110-01-528-6813