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 4140-01-216-5118
NSN 6130-01-528-8086
NSN 5975-01-627-0337
NSN 5985-00-107-2725
NSN 6145-01-131-1739
NSN 5985-01-116-2604
NSN 6685-00-758-1162
NSN 6130-01-288-4323
NSN 5920-00-149-1469
NSN 5998-00-079-3080
NSN 5975-01-186-2224
NSN 5915-01-598-6156