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 6620-00-572-8787
NSN 5895-01-336-3868
NSN 6130-00-541-8468
NSN 5915-00-831-6143
NSN 5915-01-563-3251
NSN 6685-01-411-5286
NSN 6650-00-972-8650
NSN 5935-00-248-5919
NSN 5965-00-465-9566
NSN 5965-01-058-1414
NSN 2925-00-853-5039
NSN 6145-00-889-1492