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 6650-01-437-9557
NSN 5965-00-912-9318
NSN 6645-01-500-0827
NSN 5915-01-197-1857
NSN 5915-01-466-5561
NSN 6610-01-650-6364
NSN 5920-01-593-4923
NSN 5895-01-648-1909
NSN 5975-01-196-2031
NSN 5950-01-135-7198
NSN 5985-01-477-6536
NSN 5895-00-368-9243