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 6110-00-229-6762
NSN 4140-01-445-5945
NSN 5950-01-467-3682
NSN 5950-01-059-3521
NSN 6130-01-608-2497
NSN 5975-00-051-7332
NSN 5855-01-439-0116
NSN 6150-01-182-6174
NSN 5905-00-428-0989
NSN 6620-00-965-9841
NSN 5910-00-195-2614
NSN 5855-01-184-8089