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 6620-01-377-0414
NSN 5985-01-495-4469
NSN 5975-01-455-0923
NSN 5895-00-603-1729
NSN 5925-00-150-1072
NSN 5855-01-468-1431
NSN 6240-00-405-5888
NSN 6150-01-544-8427
NSN 5835-00-529-6307
NSN 5915-01-566-7954
NSN 5990-00-424-8872
NSN 5999-01-292-3024