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 6620-01-106-3553
NSN 6610-01-112-0447
NSN 6645-00-527-6531
NSN 4140-01-293-6029
NSN 6145-01-422-4371
NSN 6135-00-885-6003
NSN 5920-01-226-7876
NSN 6130-01-299-5536
NSN 5910-00-637-2609
NSN 6135-01-226-4071
NSN 5950-01-557-4828
NSN 5996-00-760-5152