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 5835-01-601-4411
NSN 5925-01-089-4946
NSN 6620-01-337-9070
NSN 5985-01-467-5306
NSN 4140-01-437-3991
NSN 6240-00-563-5846
NSN 6130-00-139-2914
NSN 5935-01-470-9179
NSN 5910-00-490-8835
NSN 6220-01-443-7662
NSN 6240-01-594-5703
NSN 5950-00-737-6164