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 5905-01-263-6434
NSN 5935-01-476-7260
NSN 5996-01-057-1981
NSN 6110-01-207-1404
NSN 5835-00-309-2373
NSN 6645-00-192-1152
NSN 5915-00-042-4619
NSN 6240-01-450-4886
NSN 6645-00-728-1316
NSN 5985-01-371-0637
NSN 5998-00-654-0288
NSN 6135-01-010-0891