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 5835-01-495-5986
NSN 5910-00-216-4726
NSN 6150-01-037-1091
NSN 6650-01-181-6037
NSN 5835-00-532-5910
NSN 5975-01-386-7356
NSN 5935-01-155-3752
NSN 5999-00-970-5301
NSN 6240-00-870-0423
NSN 6620-01-177-5567
NSN 6620-01-067-5670
NSN 5990-01-230-6301