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 5990-01-082-1357
NSN 6220-01-432-0089
NSN 5835-00-466-1014
NSN 6135-00-777-5562
NSN 5930-01-560-6526
NSN 6610-01-633-8931
NSN 6130-01-242-6195
NSN 6240-01-392-2018
NSN 5915-01-319-2519
NSN 5945-01-391-6083
NSN 5998-01-100-4255
NSN 5935-01-550-8511