Fill cracks with these coatings to stop leaks and deaden sound. They resist rust, salt, and acid.

Splice rubber O-rings and other gaskets with this chemical resistant adhesive.

Capture intricate details when creating prototypes, molds, and linings with these easy-to-mix two-part compounds. This urethane is water and abrasion resistant.

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Create detailed rubber shapes that are ready to use in fifteen minutes or less. Unlike traditional casting compounds, which can take up to 24 hours to set, these compounds harden after two minutes, and can be removed from molds within fifteen. Mix two parts together to make your own prototypes, molds, and linings.

Combine acrylic compounds in different ratios to adjust the consistency from thin to thick. Thin mixtures are easier to pour and better for filling small crevices. Thick mixtures will shrink less as they dry.

Silicone compounds are a putty that you can mix with your hands and press or form into any shape. They do not shrink as they dry, so textures and other fine details are captured faithfully. Soft silicone is easier to remove from molds than firm silicone, especially when making complex shapes. Firm silicone holds its shape better than soft silicone, so small ridges and channels are less likely to deform or collapse over time.

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Combine the liquid components to form a putty that can be molded into or around any shape. Use these compounds to capture intricate details when creating prototypes, molds, and linings.

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These compounds make transparent molds, so you can monitor the fill level, identify molds after casting, and avoid damaging parts when cutting the mold away. All are two-part compounds; mix together to activate.

Urethane compounds create hard molds, which are good for delicate and intricate shapes because the small contours won't deform or collapse when the material is poured in. Although not necessary, curing urethane molds inside a vacuum chamber improves their clarity. By removing trapped air bubbles, the chamber prevents the finished mold from looking speckled.

Silicone compounds handle much higher temperatures than urethane compounds—up to 570° F. Silicone also cures faster than urethane, and it won't shrink as it cures, which means you won't need to guess at the final size of your mold. Because silicone compounds trap a lot of air bubbles when mixed, they must be cured inside a vacuum chamber. The chamber removes the trapped air bubbles, strengthens the mold, and improves its clarity.

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After these compounds cure, they're tough enough to be machined. They are easy-to-mix two-part compounds that capture intricate details when creating prototypes, molds, and linings.

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Replicate even the most complex details when creating prototypes, molds, and linings. This easy-to-mix two-part compound flows smoothly into crevices.

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Create rubber molds that keep their shape and strength for decades. Formulated to last longer than other casting compounds, these compounds produce molds that won’t soften and degrade so you can cast the same intricate part every time. Since these are two-part compounds, they must be mixed together to activate. Unlike other casting compounds, they won’t shrink during curing for accurate, predictable results.

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These food-grade compounds comply with FDA 21 CFR. They are easy-to-mix two-part compounds that capture intricate details when creating prototypes, molds, and linings.

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This silicone compound offers good resistance to acids, oils and salt water. Use it to capture intricate details when creating prototypes, molds, and linings with this easy-to-mix two-part compound. It is a durable and tear-resistant silicone, which easily demolds.

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Mix these two-part foam casting compounds and pour into your mold—they expand to fill every hole and cavity. Because they're foam, they're lighter weight than other casting compounds.

The foam's expansion is related to its density. Denser foam expands less; lighter foam expands more.

Flexible compounds cure into soft foam; use them to cast gaskets, cushions, and other bendable objects. The foam is open cell, which means it will absorb water, air, and gases.

Rigid compounds form stiff, closed-cell foam, which prevents water and air from flowing through the part.

Machinable compounds are dense enough to create prototype modeling blocks, so you can make mockups and test out tooling setups with little cost and less wear on your tools.

Compounds that meet FMVSS 302 prevent the spread of flames. Originally used for seat cushions and arm rests in cars, these compounds conform to U.S. Federal Motor Vehicle Safety Standards for flammability of interior materials.

UL 94HB-rated compounds have been tested to ensure that flames extinguish or do not spread quickly.

Before casting, apply a mold-release lubricant to prevent the part from sticking, stretching, and tearing. These wax-based lubricants won't cause the foam to collapse as it cures. Because they leave a residue, parts should be cleaned before painting or coating.