Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations waross on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by sarah321

  1. sarah321

    What causes normal performance degradation of flexible rubber impeller pump?

    Hello, I know that over time a rubber impeller is going to get worn down and therefore performance of the pump will drop, which is why there is a recommended about of hours before replacing an impeller. But, what is the actual reason for this normal performance loss? I would assume the rubber...
  2. sarah321

    Tolerance Stack Up Question

    I am performing a tolerance stack up on a indicator push button that when pushed compresses a micro-switch. I haven't done a tolerance stack up before, but understand the basic idea. The part I'm struggling with is that there are moving pieces in the stack up. Both the plus-sign shaped ejector...

Part and Inventory Search