Polypropylene sealant ; the final solution .

[Charles in Aus.]

No sealant I tried gave totally perfect results. While Sikkens did seal its mechanical bond was poor , so any flex threatens to compromise it .
Check break mentioned welding it , I don't have the gear but I do have many soldering irons .
I used a few to initially join the sections and more importantly the end caps , then a larger one to smooth over the unions .
The results were excellent, good mechanical properties and a total seal. I followed up.with Sikkens as a back stop in case of minor pin holes .
All in all a quite satisfactory solution to an annoying problem .
Thanks to all that contributed .

 

[Janicholson]

Good solution. The process also gave you a semesters worth of welding plastic education! Jim

 

[T.R.K.]

Ok. What were you sealing up?

 

[Charles in Aus.]

Ok. What were you sealing up?

A ready made polypropylene strip drain . It is made in one metre segments that clip together . Sealing is not really a problem once surrounded by concrete, the end caps though leak and drip in an area where I don't want it to .