Birchwood Technologies
Eden Prairie, MN 55344
PRESTO BLACK-® BST4 Brush-On Blackener for Touch-ups in Aircraft Engine Rebuilding and Machine Shop Quick-Fix for Previously Black Oxided Parts with Scratches
Eden Prairie, Minnesota: PRESTO BLACKÃ-® BST4 brush-on liquid is an instant acting cold blackener for all iron and non-stainless steels. When applied to any clean ferrous metal surface, the BST4 solution blackens within 30 seconds and forms a durable black finish that can be top coated to form an attractive, protective black oxide finish. For the Aerospace Industry, PRESTO BLACK BST4 liquid...
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Liquid Rust Preventive provides long-term protection.
DRI TOUCHÃ-® PLUS IRP3 penetrant and sealant works on impregnated and non-impregnated powdered metal parts, regardless of density or porosity of surface. Low viscosity liquid penetrates remaining porosity of powdered or sintered metals to displace moisture beneath surface. Once dry, it leaves semi-solid protective film that is absorbed by part itself. Protection levels range from 80-120 hr of...
Read More »
PRESTO BLACK-® BST4 Brush-On Blackener for Touch-ups in Aircraft Engine Rebuilding and Machine Shop Quick-Fix for Previously Black Oxided Parts with Scratches
Eden Prairie, Minnesota: PRESTO BLACKÃ-® BST4 brush-on liquid is an instant acting cold blackener for all iron and non-stainless steels. When applied to any clean ferrous metal surface, the BST4 solution blackens within 30 seconds and forms a durable black finish that can be top coated to form an attractive, protective black oxide finish. For the Aerospace Industry, PRESTO BLACK BST4 liquid...
Read More »
Liquid Rust Preventive provides long-term protection.
DRI TOUCHÃ-® PLUS IRP3 penetrant and sealant works on impregnated and non-impregnated powdered metal parts, regardless of density or porosity of surface. Low viscosity liquid penetrates remaining porosity of powdered or sintered metals to displace moisture beneath surface. Once dry, it leaves semi-solid protective film that is absorbed by part itself. Protection levels range from 80-120 hr of...
Read More »