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Flex-It 90

(5 reviews) Write a Review

$27.99 - $637.42

Flex-It 90 is a semi-rigid urethane casting resin for casting abrasion resistant molds with excellent tear strength.

Maximum Purchase: 10 units

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Flex-It 90 is a semi-rigid urethane casting resin designed for casting abrasion resistant molds, seals, gaskets, models, prototypes, parts, rollers, etc.. It is semi-rigid in mass castings and flexible in thin cross-sections. FLEX-IT 90 has excellent abrasion resistance, tear strength, tensile strength, and has good chemical resistance.

Flex-It 90 is a semi-rigid urethane casting resin designed for casting abrasion resistant molds, seals, gaskets, models, prototypes, parts, rollers, etc.. It is semi-rigid in mass castings and flexible in thin cross-sections. FLEX-IT 90 has excellent abrasion resistance, tear strength, tensile strength, and has good chemical resistance.

Have questions? Visit our FAQ.

Mix Ratio 1:1 by weight / volume
Working Time 3 minutes
Demold Time 1.5 hours
Heat Deflection 170°F
Shrinkage .001
Color Semi-clear
Hardness 90-A
Viscosity 1000 cps
  • 5 Charles White on May 11th 2024
    Flex-It 90

    I have used this product for quite a few years. I mold and cast small parts for action figures and this is the closest product out there that matches the factory plastic in elasticity with no breakage. When properly cured you can pull parts with thin small protrusions without breakage and after the cure process it does not become brittle after time.

  • 4 Deb Stalzer on Jan 30th 2024
    very helpful

    The product works well with our process

  • 4 John Garfield on Jul 7th 2023
    Flex-It 90

    Product works well, mixes easily & dries fast but I wish I paid more attention to how fast it dries before I bought it. I was so caught up on its wear resistance I did not realize the stuff would be practically impossible to mix, pour & get inside a vacuum chamber before it was already too hard to degas. Definitely says this on the spec sheet but it seems a bit extreme compared to many alternatives. That said, this same quality makes it ideal for other applications or in settings where someone can just mix this in a vacuum w a robot or from inside the comfort of their very own space suit.

  • 5 Andy Phillips on Jun 14th 2022
    Rail Road Cart Wheels

    My son and I made our own wheels for our motorized rail road carts. Flex it 90 is incredibly perfect for machining and durability. We ride abandoned tracks and have hit fist size rocks at 35 mph, and it did nothing to our wheels. Its a great product.

  • 4 Suzanne E Brown on Sep 24th 2021
    More bang for your buck but with a few minor cons

    First off I like how flex it 90 has way more resin at the same price as it's competitors but gives you way more resin than those other brands. The resin feels similar to PVC durable rubbery plastic which I wanted, like those store bought action figures. So if you are making a action figure, this is pretty good for that. There are a few cons that I feel would improve the product exponentially which is why I only gave it four stars this time: Cure time is too fast: I barely have enough time to pressurize it or check to make sure it's seeping into the nooks and crannies of my mold. I wish the cure time was a tiny bit longer. Like 7-10 minutes The resin isn't water white clear/transparent: It's very hard to color match the resin. The amber color darkens my pigment powders and I can't do bright colorful casts. Or do transparent candy color casting with it. Other than that, a great product and you get a lot of resin to use for a decent price. My only cons are cure time to fast to pressurize and pigmenting it a certain color is a challenge.