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 6685-00-883-4608
NSN 5835-00-322-5654
NSN 5990-01-601-7332
NSN 5930-01-218-4690
NSN 6620-00-086-5223
NSN 6685-01-578-4771
NSN 5915-01-453-0200
NSN 5960-01-412-0619
NSN 5950-00-099-9612
NSN 5855-00-491-7079
NSN 6220-01-581-2162
NSN 6240-00-756-5149