My 3 1/2 year old Insinkerator insta-hot water dispenser (model H770)
sprang a leak in the plastic case. I can't even see the crack but a soap
water bubble test while pressurizing the tank shows it is there. It seems
to be near or along a 'rib' of the plastic tank.

Can anyone suggest an easily available high temp, waterproof glue or patch
material to try a repair? It's hard plastic and obviously stays quite hot
all the time with 190+ degree water in it.

I see the newer models have a stainless steel tank. The company says it is
to stay competitive. I wonder if that's the real reason.

Thanks for any repair suggestions before having to purchase a new one.

Joy