MPS innard, bad seal? Options

[r3dplanet]

So I'm finally getting around to installing the Tangerine Racing manifold pressure sensor diaphragm kit through my MPS because it's Saturday and I'm sick and left with a whole free day to myself.

The process went smooth thanks to patience, an ultrasonic cleaner, more patience, and the ever-helpful pbanders D-Jet website.

I know that I'm supposed to be able to suck and hold vacuum at the port. But the boxful of MPS units I have all suffer from an inability to hold vacuum.

I split open the best one I had, de-soldered the connector, and pulled out the core unit. Up against the inside of the case, there is a small flat strip that acts as a spring holding down a small circular seal against the vacuum port opening. It's clear that this seal is made of some sort of plastic that is dried and warped with age.

Here's a photo:



The seal won't hold air, water, or muster simply because it's old. I'm wondering what others may have done to correct this failure.

Anyone?

Thanks,
Marcus