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 6610-01-353-4883
NSN 5925-00-734-1441
NSN 5905-01-435-5816
NSN 6130-01-223-9169
NSN 6645-01-186-9809
NSN 5835-00-518-2740
NSN 5925-01-467-2668
NSN 6240-01-423-9738
NSN 6135-01-328-6583
NSN 5998-00-050-2072
NSN 5975-01-181-7827
NSN 6110-00-379-9693