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 6150-01-516-8950
NSN 6150-01-443-8007
NSN 5915-00-274-2282
NSN 6105-01-367-6005
NSN 5965-01-380-9821
NSN 2925-00-620-7757
NSN 5965-00-839-0302
NSN 6110-01-498-0611
NSN 5835-01-436-6549
NSN 5925-00-343-6747
NSN 5855-01-523-8926
NSN 5990-00-444-9993