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 5965-01-313-5622
NSN 5975-01-507-9685
NSN 5925-01-447-3279
NSN 5935-00-573-1347
NSN 5905-01-128-7072
NSN 5855-01-141-8227
NSN 5930-01-360-0432
NSN 6135-01-449-0625
NSN 6135-01-113-1507
NSN 5855-00-149-0766
NSN 5935-01-612-4568
NSN 6620-01-207-0047