Phil,
What class product is this? (2 or 3)
More importantly what is the "warranty" period for this product?
(Anything longer than 3 years will be a problem!)
David A. Douthit
Manager
LoCan LLC
David A. Douthit
Manager
LoCan LLC
phil bavaro wrote:
> Ok, I've been around the sealant, conformal coating, potting, and general
> adhesive world for 20 years and I have my own opinions and preferences when
> it comes to specifying a compound for a production assembly, but I would
> like to see what this group will suggest for this new assembly we are
> designing:
>
> We have a CCA on which is mounted a very large bulkhead type connector
> which requires a form in place sealant around it where it interfaces with
> (sticks through) the chassis. The connector is mechanically fastened to
> the chassis with four screws but the application will see very tough
> vibration exposure. The bond is between the connector flange (plastic)
> and the chassis (cast aluminum) and must be capable of resisting constant
> outdoor environment abuse such as high pressure water spray cleaning, motor
> oils, fuels, and general dirt.
>
> The temp range is -40 C to +85 C, and it will not be submerged (at least
> not intentionally) for long periods of time but moisture is the primary
> culprit that we are trying to defeat as the CCA will not be sealed with
> conformal coating.
>
> Please select your choice and tell me why? Remember, this is for
> production so cure time, cost, and application ease are very important
> factors. Please include whether or not the cast aluminum chassis needs to
> be chem filmed, primed, or painted to seal its surface.
>
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