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 6240-01-225-4671
NSN 5965-01-301-2553
NSN 6685-00-682-0907
NSN 5915-01-283-6173
NSN 6150-01-435-6551
NSN 5935-01-388-2729
NSN 6610-00-791-4705
NSN 6320-00-790-4844
NSN 5930-01-253-0642
NSN 2925-01-528-7333
NSN 5996-00-201-3763
NSN 6105-00-755-7087