This Stuff is TOUGH!

We’ve been using Hapflex 665 and 668 to cast patterns and core boxes since the late ’80s and man this stuff is TOUGH! It’s a bit pricier than Freeman and BJB but the quality and consistency are what keeps coming back to Hapco year after year.

Jim Henson

Oil City Ironworks

Rated 5 out of 5 stars

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All of Hapco's formulations are completely free of Mercury.

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Hapco has been in business for over 50 years!

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