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 5950-01-604-1561
NSN 6320-01-160-7757
NSN 5998-01-385-1796
NSN 6620-00-066-1284
NSN 5925-01-033-3853
NSN 5925-01-387-3946
NSN 5935-01-406-3481
NSN 5855-00-151-3853
NSN 5920-01-084-7975
NSN 6610-01-476-9945
NSN 6610-00-758-3486
NSN 5996-00-518-4880