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 5915-01-657-8735
NSN 5990-01-197-6922
NSN 5835-01-030-8914
NSN 5920-00-975-9834
NSN 6135-01-313-4865
NSN 4140-01-589-5681
NSN 5985-00-485-8441
NSN 5895-01-355-5046
NSN 6105-01-042-6633
NSN 5895-01-481-3952
NSN 5915-01-367-7420
NSN 2925-01-324-2799