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Capping Compound


Test Mark Ultra-Strength Capping Compound is used to cap the ends of concrete test cylinders so compression force will be evenly distributed to the cylinder during testing. The compound comes in the form of ultra-thin flakes for better heat transfer, faster melting, and easy, dust-free pouring. Compression strength is 8,000 psi by the 2" cube test method in 2 hours, 260°- 290° F melting range.

Supplied in 50 lb. reinforced shipping bag. Material Safety Data Sheet provided with each order.

  • NOTE: Motor Freight shipment of 5 or more bags will lower your shipping cost. You will be contacted with an adjusted freight cost before order shipment.


Shipping Weight: 54 lbs.

Price $39.95

Bulk Pricing

10+ QTY $38.95 ea.

40+ QTY $35.95 ea.