Brush-on blackener serves as quick fix for scratched black oxided parts

February 18, 2013

Brush-on blackener serves as quick fix for scratched black oxided parts - TheFabricator.com

PRESTO BLACK® BST4 brush-on liquid from Birchwood® Technologies is an instant-acting cold blackener for all iron and nonstainless steels. When applied to any clean ferrous metal surface, the product blackens within 30 seconds and forms a durable black finish that can be topcoated.

The liquid is suitable for use in the aerospace industry as a blackener for rebuilding pistons, bearings, crankshafts, and remachined areas or other reworked metal parts. It also serves as a manual black oxide process for brush-on requirements. In the machine shop, it blackens remachined areas or reworked metal parts and serves as a quick repair for scratches or damaged areas on parts previously black oxide-finished.



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