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What is the coating on aluminum cast motor/pump bodies

What is the dark coloured coating usually applied on the inner and outer surfaces of a die-cast aluminum motor or pump body? The coating is resistant to heat generated during the operation of the motor/pump.

Timur Ulucak
aluminum extrusions & finishing - Istanbul, Turkey
2005

Sounds like hardcoat anodizing to me.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2005

2005

Timur

Contact the pump or motor manufacturer's tech support department and they probably can help you out.

Are you just curious, or do you have an application for a comparable coating?

Willie Alexander
- Colorado Springs, Colorado

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