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 6150-00-358-0646
NSN 6220-00-124-8130
NSN 6650-01-141-5999
NSN 5930-00-039-8823
NSN 5925-01-374-1489
NSN 6105-00-079-0024
NSN 6110-01-400-4207
NSN 5935-01-154-7922
NSN 5998-00-837-4305
NSN 6610-00-139-9757
NSN 6610-01-206-5278
NSN 5930-00-387-1970