This 10 lbs coil of White Oakum from Braxton Harris features a 5/16" diameter cord, making it ideal for sealing joints in plumbing applications. Oakum is traditionally used to pack joints in cast iron pipes, providing a watertight seal. This product is easy to work with and can be used in various plumbing and construction projects. The 200 ft length ensures you have ample material for multiple applications, making it a cost-effective choice for contractors and DIY enthusiasts alike. Its natural fibers provide excellent durability and resistance to moisture.