Tmoose
Mechanical
- Apr 12, 2003
- 5,626
In years gone by it was common practice to "paint" the entire inside surfaces of cast (iron) gearbox housings and other cast housings . A commonly mentioned purpose was to lock in casting sand and aid in maintaining cleanliness of the lubricating oil. Of course it must have exceptional adhesion and oil resisting properties.
As recently as 2000 Sherwin Williams had a product specifically for that purpose. I seem to recall it may have been described as a shellac or lacquer.
Glyptal, formerly by GE, was sometimes mentioned as useful to accomplish the sealing reliably.
I'm surprised Googling for modern products has come up so empty, using widely varying search terms.
Does anyone know what modern practice, and products might be used to seal castings these days ?
thanks,
Dan T
As recently as 2000 Sherwin Williams had a product specifically for that purpose. I seem to recall it may have been described as a shellac or lacquer.
Glyptal, formerly by GE, was sometimes mentioned as useful to accomplish the sealing reliably.
I'm surprised Googling for modern products has come up so empty, using widely varying search terms.
Does anyone know what modern practice, and products might be used to seal castings these days ?
thanks,
Dan T