MBO’s Standard Butyl Sealent used on Drain,Sewer,and Septic
3/4″ used on Drain.
1-1/4″ used on Sewer
NPC Bidco C-56 Butyl Mastic Joint Sealant is custom engineered to meet the most exacting standards of the precast concrete industry. C-56 remains flexible and forms a permanent bond to a wide variety of substrates including concrete, metals and plastics.