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 6240-01-449-0746
NSN 6645-01-359-5769
NSN 5999-01-443-2466
NSN 5975-01-481-2646
NSN 6650-01-178-8731
NSN 6130-00-459-4311
NSN 5855-01-243-2355
NSN 6620-01-641-4122
NSN 5990-00-789-1333
NSN 6130-01-141-2409
NSN 5985-00-939-0388
NSN 6650-00-804-2039