Pumps

We would need a little more info otherwise we'd have to guess.

1.) On your Peristaltic pump, do you have any spec!s on it

2) how old is it.

3.) at what speed are you running

4.)What chemical and concentration are you pumping? Also what are the physical properties of is the chemical.

5.) is the pump operating with its original oem parts.

That would be a start.

What type of chemical is being pumped and what material will be resistant to what is being pumped? You need to check compatibility of sealing material to chemical being pumped. Did you do this for the trials you had?

Is there chemical deterioration at all on the seal or is it mechanical failure?

More information is needed!

Wow, good questions, and a ga for you ;)

I assume you are talking about an internal gear pump. Most of the major manufacturers offer hardened (eg. nitrided) gears and shafts, and hard (eg Tungsten Carbide) bushes. Have you tried these?

Check the alignment. If working at high speeds check if rotor balanced.

If the fluid contains undissolved solids, you need special shaft and bushings to cope with the abrasive action generated by them.

If the wear is due to corrosive action by the chemicals being pumped, then the type of material to use for the bushing should be appropriate.

Therefore, the information you have provided is insufficient for anyone to recommend a solution.