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 6620-00-725-7289
NSN 5910-01-178-6893
NSN 5950-01-244-1178
NSN 6610-00-296-5007
NSN 5910-00-283-7392
NSN 5950-00-553-7964
NSN 5895-01-420-0656
NSN 5996-01-311-4424
NSN 5920-01-085-4727
NSN 5910-01-171-8695
NSN 5855-01-548-9718
NSN 5945-01-035-9735