Apeks DB4/MTX-RC/R Environmental End Cap cleaning

[VonTrapp]

Hi @LL,

I'm posting to learn if someone can tell how to appropriately clean the Environmental End Cap of the first stages DB4/MTX-RC/R.
This Environmental End Cap consists of a rubberised material mould on top of a metal cap which acts as a Hydrostatic Diaphragm. I noticed a little bit of salt deposit on the threads and I wanted to remove it completely. Soapy warm water and a brush is not doing the trick and I don't want to put it through BIOX and ultrasonic before knowing it's safe to do it (that won't damage the rubberised material).

Any pointers regarding this, will be appreciated.

 

[ChrisMBC]

I'd highly recommend Salt-Away, which is listed as safe for use on plastics and is very good at lifting the salt crystals. It does leave a thin residue, so for parts that are going to be in contact with high-pressure gas I normally clean them after using Salt-Away with Simple Green. For your environmental cap you could probably leave them, however.

 

[happy-diver]

Scrape it out with a spare underwire or pick thing, did you keep the metal inserts from your last car wiper change

Vinegar