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 7035-01-649-0424
NSN 5965-01-398-3099
NSN 5910-00-497-8928
NSN 5998-00-138-0012
NSN 5998-01-540-1099
NSN 5910-01-191-7288
NSN 2925-00-185-1618
NSN 5915-00-003-5718
NSN 5835-01-132-5894
NSN 5910-00-117-6257
NSN 5905-01-606-1108
NSN 6135-01-532-0775