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 6130-01-136-2769
NSN 6645-01-442-6476
NSN 5990-01-034-2390
NSN 5950-01-634-0677
NSN 6320-01-481-7322
NSN 6645-01-347-0450
NSN 6150-01-435-7627
NSN 5920-00-770-2015
NSN 5965-01-377-3587
NSN 5930-01-256-3261
NSN 5960-01-628-2760
NSN 5996-00-489-0595