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WaterWeld will plug or seal leaks and patch holes and cracks in almost anything. Great for application where a waterproof seal is needed! Ideal for repairing plumbing, fuel tanks, tub and shower, drains, pool and spa, boats and potable water tanks; setup occurs even under water. After curing, it can be drilled, tapped, filed, sanded and painted. WaterWeld has a set time of 15-25 minutes and sets hard in one hour. Waterweld is perfect for applications where your project is wet or submerged. WaterWeld cures to an off-white color, is rated at a tensile strength of 900 PSI and will withstand temperatures up to 300F. 

Strength: 900PSI
Set Time:
25 Minutes
Cure Time:
1 Hours
Cure Color:
Off White 

Great For: 

  • Plumbing, Tub, Shower & Drains 
  • Fuel Tanks 
  • Marine & Boats 
  • Potable Water Tanks 
  • Decks 
  • Wet and Submerged Wood  

    • 31% less
    Market price: $7.99, you save $2.50
  • $5.49
  • Shipping info

    Standard Shipping: 
    Order total under $30 - $14.95 per order
    Order total between $30 & $50 -  $9.95 per order
    Free shipping on orders over $50.
    See details for exclusions.

  • Return Policy

    Subject to approval


  1. CUT: - Remove required amount of putty. 
  2. MIX: - Thoroughly knead putty with fingers to a uniform color. 
  3. APPLY: -Press putty firmly to the surface to be repaired.

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Standard shipping is $14.95 per order for orders with a subtotal less than $30. Orders over $30 have a flat shipping rate of $9.95 per order. Shipping will be added to your order at checkout. Products shipped within the lower 48 states should arrive in less than 5 days. Orders totaling $50 or more qualify for free standard shipping. 

Shipping rates, order minimums, and free shipping offer apply to online and retail customers only. Wholesale and phone orders do not qualify for free shipping. Expedited shipping available. Please call for expedited shipping charges. Expedited shipping is not covered under our free shipping offer.

Returns must be approved before being shipped back to Cincinnati Dowel & Wood Products. Products that have been altered may not be returned.

Products not eligible for return

  • Custom cut dowels*
  • Products that have been cut, engraved, altered, or damaged by customer
  • Products that have been finished or painted.

 Returns may be subject to a restocking fee and shipping fee.