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 6320-01-541-7585
NSN 5935-00-833-3039
NSN 5985-00-375-1837
NSN 5996-01-014-6103
NSN 6685-00-030-4662
NSN 6220-01-147-9180
NSN 6240-00-066-0714
NSN 5835-01-592-2350
NSN 5975-00-924-1461
NSN 5960-01-029-5637
NSN 6130-00-827-1967
NSN 6610-01-078-3242