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 5915-01-039-3775
NSN 4140-01-378-8390
NSN 6130-00-627-8840
NSN 6220-01-268-2913
NSN 5975-01-100-0320
NSN 5999-01-625-0587
NSN 6220-01-512-2028
NSN 5910-00-070-5797
NSN 6620-00-756-2661
NSN 5935-00-285-2767
NSN 6610-00-764-4015
NSN 6220-01-420-6512