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 5920-01-053-0986
NSN 6150-01-261-7945
NSN 4140-01-284-9920
NSN 6220-00-218-0857
NSN 5915-01-415-3100
NSN 5915-00-004-7608
NSN 5835-01-227-4752
NSN 6130-01-050-4915
NSN 6620-00-961-8643
NSN 6240-01-235-2604
NSN 5930-01-235-8734
NSN 6685-00-419-0643