Polypropylene 8623

[hound]

I have a consumer product using 8623 Polypropylene. Its shape can best be described as a short and open-ended cylinder with an oblong cross-section. It has a small section to attach it to a tube. It is obviously not dimensionally stable. What material spec changes would you recommend that are cost effective. Flexing is not a performance requirement, but is important in preventing impact breakage (a few pounds of force). Here is a rough idea of its shape:
x x
x x Verticle x-section. depth
x x is about 1.5 inches.
xxxxx xxxxx
x x
x x
x x
x x
x x
xxxxxxxxxxxxxxxx

Any ideas are appreciated. Thank you.

 

[prodeng]

It was unclear what your goal is in changing the material spec. If it is to improve dimensional stability, perhaps glass filled or talc filled polypropylene would be enough of a change. Any chemical contact concerns?