American made Nupak Oakum oakum noun oa·kum \ˈō-kəm\ loosely twisted jute or hemp fiber used in caulking, sealing and packing in a variety of industries. Learn More Oakum for Plumbing Used to pack and caulk cast iron pipes. Learn More Oakum for the Marine Industry Used to seal and caulk wooden boats. Learn More Oakum for the Equine Industry Used as hoof packing. Learn More Oakum for Log Homes Used to seal and caulk log homes. Learn More Oakum for Construction Used to create joints in concrete, repair concrete and driveway cracks. Learn More Oakum By Product Brown Oakum is made from burlap, oil and Bentonite. Click to learn more. White Oakum has jute roving, Bentonite and a trace of water. It is used for plumbing only. Learn more by clicking here. Oakum By Industry Plumbing Used to seal and caulk cast iron pipes. Marine Used to seal and caulk wooden boats. Equine Used as hoof packing. Log Cabins Used to seal and caulk log homes. Construction Used to create joints in concrete, repair concrete and driveway cracks. Want to learn more? Contact Us!