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 5915-00-892-3011
NSN 6620-00-708-2688
NSN 6685-00-465-2019
NSN 6135-01-130-3145
NSN 5905-01-287-1789
NSN 7035-01-102-8111
NSN 5998-01-054-2896
NSN 6320-01-384-7079
NSN 5905-01-571-7188
NSN 6240-00-104-4662
NSN 6105-00-982-4723
NSN 6105-00-268-2878