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 5930-00-001-6128
NSN 6320-01-433-3953
NSN 5915-00-423-7196
NSN 5915-01-350-2407
NSN 5998-01-590-9648
NSN 6130-00-830-2701
NSN 5915-00-053-0697
NSN 6150-00-992-1874
NSN 5996-01-269-3621
NSN 5835-01-364-6830
NSN 5999-01-097-8667
NSN 5925-00-412-1139