Electronics > Projects, Designs, and Technical Stuff
Deoxit and Brake Cleaner
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Zero999:

--- Quote from: amyk on October 11, 2019, 01:37:48 am ---It depends on what exactly you mean by "brake cleaner"; some are chlorocarbons, and those definitely can dissolve plastic, while others (often known as the "highly flammable" type) are hydrocarbons.

--- End quote ---
I thought chlorocarbons were banned.

Anyway, where I work we routinely use brake cleaner and have never had any problems with it attacking plastics. The stuff we use is not as harsh as acetone or IPA and has trouble cleaning some types of permanent marker.
tooki:

--- Quote from: Benta on October 10, 2019, 04:48:41 pm ---Kontakt Chemie 60.

--- End quote ---
Beware that Kontakt 60 is corrosive, and is not intended to be left on!

The manufacturer instructs one to rinse away the Kontakt 60 with solvent (like their Kontakt WL) and then apply Kontakt 61 for protection.

They do say that in “many cases” the Kontakt 60 can be left in place, but I’d never consider doing that on anything but large contacts (like in mains switches). The web is littered with stories of Kontakt 60 eating through PCB traces, etc.
tooki:

--- Quote from: Zero999 on October 11, 2019, 10:30:29 am ---
--- Quote from: amyk on October 11, 2019, 01:37:48 am ---It depends on what exactly you mean by "brake cleaner"; some are chlorocarbons, and those definitely can dissolve plastic, while others (often known as the "highly flammable" type) are hydrocarbons.

--- End quote ---
I thought chlorocarbons were banned.

--- End quote ---
You're thinking of CFCs (chlorofluorocarbons). Chlorocarbons (aka organochlorides) are a huge group of compounds with many widely used members, including PVC, dry cleaning solvents, etc.

CFCs are still being widely manufactured as precursor materials for other products. They just can’t be sold for refrigerant and propellant applications any more.
bson:

--- Quote from: T3sl4co1l on October 11, 2019, 12:01:24 am ---Brake cleaner is likely to dissolve out, or swell, all kinds of plastics used in electronics.  Do not use it.

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Yup, that's what taught me not to store used brake cleaner in old milk jugs while I procrastinate disposing of it properly...
Zero999:
Here's a link to the brake cleaner, I use where I work. I haven't had any problems with it attacking plastics, rubber or paintwork. It's fairly gentle, compared to what others here say about brake cleaner.
https://www.screwfix.com/p/holts-aerosol-brake-cleaner-600ml/1396g
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