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 5835-00-905-7165
NSN 5996-01-444-3915
NSN 5960-01-095-6873
NSN 5915-01-090-0478
NSN 6240-01-513-2732
NSN 6645-01-378-1285
NSN 6320-01-345-5817
NSN 5920-01-188-0048
NSN 5996-01-498-0653
NSN 6645-00-252-5798
NSN 5935-01-143-6493
NSN 6645-01-600-5653