August 7, 2004 -- DANVERS, Mass., (USA) -- Jobwerx News -- Flex Bond pipe sealant ideal for joining hoses to rigid PVC couplings and Plastic Welder SD structural sandable adhesive for plastic surfaces from Devcon.

Flex Bond is a two-component methacrylate polymer which is activated by spraying an activator over the adhesive from Devcon, part of ITW Performance Polymers. The new sealant bonds flexible piping made of PVC, ABS, and many other plastics. It forms extremely flexible bonds that are ideal for joining hoses to rigid PVC couplings. Flex Bond requires no mixing, attains functional cure in 1 hour at room temperature, and withstands service temperatures to 200°F.

Once the methacrylate polymer has been applied to one of the two surfaces to be joined, the activator can be sprayed on top of the polymer or onto the other surface. The curing cycle begins when the polymer comes in contact with the activator. The curing cycle starts and bonds in 15 minutes. Working time is 3-4 minutes following activation. Flex Bond is also effective for sealing steel pipe joints and for laminating plastics to core materials.

It has a tensile elongation of 16% and fills gaps as wide as 25 mils. When bonded surfaces of the same material are separated by a gap of 10 mils, adhesive tensile shear (in pounds per square inch, based on ASTM D 1002) is typically 878 on ABS, 988 on FRP, 838 on PVC, and 1482 on cold-rolled steel.

Flex Bond pipe sealant is not approved for potable water applications.

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