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 5915-00-854-3120
NSN 5835-00-861-6066
NSN 5930-01-320-9391
NSN 6645-01-357-7750
NSN 5835-01-519-3834
NSN 5998-01-422-8969
NSN 6610-01-289-2848
NSN 5915-01-541-9894
NSN 5905-00-117-6998
NSN 5835-00-119-5585
NSN 6220-00-230-0807
NSN 5905-00-930-3204