[volt-nuts] Precision resistors

[J. Forster]

The red 'sealant' is Glyptal laquer. Probably safe to water wash.

I would not use any solvent on the bobbins.

The black encapsulates are likely Vishay, if they look like CK-05/6
ceramic caps. Alcohol should be safe for a quick rinse.

-John

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> Nothing abrasive should be used. Soap and water and old toothbrush is what
> I would try. Very high values avoid water!
> I use a cheap ultrasonic clear for some things in the shack!
>
> Raj
> VU2ZAP
> (former resistor manufacturer)
>
> At 17-08-2013, you wrote:
>>What is the recommended method for cleaning dirt, oil, etc from precision
>>resistors? I'm talking about a combination of wirewound on plastic
>> bobbins,
>>wirewound on mica (and sealed with something) and an unknown type that is
>>encapsulated in black plastic rectangles. These are all 1950-1960 vintage
>>and are marked "Daven".
>>
>>Joe Gray
>>W5JG
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