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 5996-01-268-1625
NSN 5999-00-960-7155
NSN 6130-00-837-0498
NSN 6110-01-180-3806
NSN 4140-01-128-1628
NSN 2925-01-486-4210
NSN 6220-00-541-8515
NSN 5975-01-200-6048
NSN 5975-01-370-5279
NSN 6645-00-935-7046
NSN 6220-01-141-6900
NSN 6620-01-355-4339