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 5855-00-411-8688
NSN 6150-01-264-0410
NSN 6620-00-140-8644
NSN 5855-01-573-5035
NSN 7035-01-358-5888
NSN 5950-01-421-6971
NSN 5935-01-119-0579
NSN 5998-00-235-8450
NSN 4140-00-824-8821
NSN 5999-00-059-3522
NSN 5855-01-023-3727
NSN 6620-01-365-1499