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 6130-00-553-8758
NSN 5910-01-433-3054
NSN 4140-01-510-1522
NSN 5985-01-494-9234
NSN 6135-01-243-5797
NSN 5835-01-484-1362
NSN 5999-01-534-4278
NSN 6145-01-343-9358
NSN 6610-00-127-7013
NSN 6685-01-315-9704
NSN 5935-01-335-9651
NSN 5985-00-432-1486