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 6320-00-937-5625
NSN 2925-01-194-9737
NSN 6220-01-013-1784
NSN 7035-00-803-3056
NSN 5999-00-969-9270
NSN 7035-01-598-2394
NSN 2925-01-157-9204
NSN 5930-00-473-5311
NSN 5835-00-412-8073
NSN 6320-00-701-0437
NSN 6320-01-523-4954
NSN 6150-01-299-8884