Material Material |
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Hardness Hardness |
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Volume Volume |
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Maximum Temperature Maximum Temperature |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Mixing Required Mixing Required |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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Clarity Clarity |
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Specifications Met Specifications Met |
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Casting Compounds

Capture intricate details when creating prototypes, molds, and linings with these easy-to-mix two-part compounds. This urethane is water and abrasion resistant.
View our selection of release agents. View additional information about the hardness of these materials.
Hardness | Time to Harden | Time to Cure | Time to Demold | Cure Temperature, °F | Max. Temperature, °F | Shrinkage | Color | Mixing Required | Volume, cu. in. | Weight, lbs. | Each | |
Urethane | ||||||||||||
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Soft | ||||||||||||
Durometer 20A | 15 min. | 168 hrs. | 5 hrs. | 77° | 180° | 1.5% | Black | Yes | 25 | 1 | 0000000 | 000000 |
Durometer 20A | 15 min. | 168 hrs. | 5 hrs. | 77° | 180° | 1.5% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Firm | ||||||||||||
Durometer 40A | 15 min. | 168 hrs. | 5 hrs. | 77° | 180° | 1.5% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 40A | 15 min. | 168 hrs. | 5 hrs. | 77° | 180° | 1.5% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Durometer 60A | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 0.5% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 60A | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 0.5% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Hard | ||||||||||||
Durometer 80A | 15 min. | 168 hrs. | 3 hrs. | 77° | 180° | 1.5% | Black | Yes | 6 | 1/4 | 0000000 | 00000 |
Durometer 80A | 15 min. | 168 hrs. | 3 hrs. | 77° | 180° | 1.5% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 80A | 15 min. | 168 hrs. | 3 hrs. | 77° | 180° | 1.5% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Durometer 94A | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 1.5% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 94A | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 1.5% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Durometer 60D | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 1.5% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 60D | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 1.5% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Durometer 85D | 5 min. | 2 hrs. | 1.5 hrs. | 77° | 180° | 1.5% | Blue-Green | Yes | 80 | 5 | 000000 | 00000 |
Durometer 85D | 5 min. | 2 hrs. | 1.5 hrs. | 77° | 180° | 1.5% | Blue-Green | Yes | 320 | 20 | 000000 | 000000 |
Machinable Casting Compounds

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.
View our selection of release agents. View additional information about the hardness of these materials.
Hardness | Time to Harden | Time to Cure | Time to Demold | Cure Temperature, °F | Max. Temperature, °F | Shrinkage | Color | Mixing Required | Volume, cu. in. | Weight, lbs. | Each | |
Aluminum-Filled Urethane | ||||||||||||
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Hard | ||||||||||||
Durometer 83D | 6 min. | 18 hrs. | 2 hrs. | 75° | 175° | 1.5% | Gray | Yes | 83 | 5 | 00000000 | 0000000 |
Durometer 83D | 6 min. | 18 hrs. | 2 hrs. | 75° | 175° | 1.5% | Gray | Yes | 334 | 20 | 00000000 | 000000 |
See-Through Casting Compounds

Create transparent molds to monitor fill levels, differentiate parts at a glance, and avoid damaging parts when cutting the mold away. These casting compounds are two parts that activate when mixed.
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 required, curing urethane molds inside a vacuum chamber improves their clarity. By removing trapped air bubbles, the chamber prevents the finished mold from looking speckled.View our selection of release agents. View additional information about the hardness of these materials.
Easy-to-Work Casting Compounds

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.
View our selection of release agents. View additional information about the hardness of these materials.
Hardness | Time to Harden | Time to Cure | Time to Demold | Cure Temperature, °F | Max. Temperature, °F | Shrinkage | Color | Mixing Required | Volume, cu. in. | Weight, lbs. | Each | |
Urethane | ||||||||||||
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Firm | ||||||||||||
Durometer 60A | 15 min. | 168 hrs. | 3 hrs. | 75° | 180° | 1.5% | Black | Yes | 25 | 1 | 0000000 | 000000 |
Durometer 60A | 15 min. | 168 hrs. | 3 hrs. | 75° | 180° | 1.5% | Black | Yes | 100 | 4 | 0000000 | 000000 |
Hard | ||||||||||||
Durometer 85A | 15 min. | 168 hrs. | 3 hrs. | 75° | 180° | 1.5% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 85A | 15 min. | 168 hrs. | 3 hrs. | 75° | 180° | 1.5% | Black | Yes | 100 | 4 | 0000000 | 000000 |
Fine-Detail Casting Compounds

Replicate even the most complex details when creating prototypes, molds, and linings. This easy-to-mix two-part compound flows smoothly into crevices.
View our selection of release agents. View additional information about the hardness of these materials.
Long-Life Casting Compounds

Create rubber molds that retain their shape for decades—they won’t soften, degrade, or warp, so you can continue to replicate intricate parts. Because these compounds don’t shrink as they cure, they are more accurate and predictable than other compounds.
View our selection of release agents. View additional information about the hardness of these materials.
Hardness | Time to Harden | Time to Cure | Time to Demold | Cure Temperature, °F | Max. Temperature, °F | Shrinkage | Color | Mixing Required | Volume, cu. in. | Weight, lbs. | Each | |
Urethane | ||||||||||||
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Firm | ||||||||||||
Durometer 45A | 60 min. | 24 hrs. | 16 hrs. | 77° | 200° | 0% | Yellow | Yes | 58 | 2.2 | 0000000 | 0000000 |
Food Industry Casting Compounds

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.
View our selection of release agents. View additional information about the hardness of these materials.
Hardness | Time to Harden | Time to Cure | Time to Demold | Cure Temperature, °F | Max. Temperature, °F | Shrinkage | Color | Mixing Required | Specifications Met | Volume, cu. in. | Weight, lbs. | Each | |
Urethane | |||||||||||||
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Firm | |||||||||||||
Durometer 60A | 8 min. | 12 hrs. | 2 hrs. | 120° | 180° | 5% | White | Yes | FDA Compliant 21 CFR 175.105, FDA Compliant 21 CFR 177.1680 | 25 | 1 | 0000000 | 000000 |
Durometer 60A | 8 min. | 12 hrs. | 2 hrs. | 120° | 180° | 5% | White | Yes | FDA Compliant 21 CFR 175.105, FDA Compliant 21 CFR 177.1680 | 250 | 10 | 0000000 | 000000 |
Hard | |||||||||||||
Durometer 78A | 4 min. | 12 hrs. | 2 hrs. | 120° | 180° | 5% | White | Yes | FDA Compliant 21 CFR 175.105, FDA Compliant 21 CFR 177.1680 | 25 | 1 | 0000000 | 00000 |
Durometer 78A | 4 min. | 12 hrs. | 2 hrs. | 120° | 180° | 5% | White | Yes | FDA Compliant 21 CFR 175.105, FDA Compliant 21 CFR 177.1680 | 250 | 10 | 0000000 | 000000 |
Durometer 88A | 4 min. | 12 hrs. | 2 hrs. | 120° | 180° | 5% | White | Yes | FDA Compliant 21 CFR 175.105, FDA Compliant 21 CFR 177.1680 | 25 | 1 | 0000000 | 00000 |
Durometer 88A | 4 min. | 12 hrs. | 2 hrs. | 120° | 180° | 5% | White | Yes | FDA Compliant 21 CFR 175.105, FDA Compliant 21 CFR 177.1680 | 250 | 10 | 0000000 | 000000 |
Durometer 75D | 5 min. | 12 hrs. | 2 hrs. | 120° | 180° | 5% | White | Yes | FDA Compliant 21 CFR 175.105, FDA Compliant 21 CFR 177.1680 | 25 | 1 | 0000000 | 00000 |
Durometer 75D | 5 min. | 12 hrs. | 2 hrs. | 120° | 180° | 5% | White | Yes | FDA Compliant 21 CFR 175.105, FDA Compliant 21 CFR 177.1680 | 250 | 10 | 0000000 | 000000 |
Foam Casting Compounds


expands to fill every
hole and cavity.


Create lightweight molds with these two-part compounds. They expand as foam after they’re poured to fill every cavity. The denser the foam, the less it will expand. Before casting, apply petroleum jelly (not included) to prevent sticking, stretching, and tearing. It won't cause the foam to collapse as it cures.
Flexible compounds cure into soft, open-cell foam, which absorbs water, air, and gases. They are often used to cast gaskets, cushions, and other bendable objects.
Rigid compounds form stiff, closed-cell foam, which prevents water and air from flowing through the part. Machinable, they’re dense enough to create prototype modeling blocks, so you can test setups without wearing down tools.
Foam Expansion | Density, lbs./cu. ft. | Time to Harden | Time to Cure | Time to Demold | Cure Temperature, °F | Max. Temperature, °F | Shrinkage | Color | Mixing Required | Weight, lbs. | Each | |
Polyurethane Foam | ||||||||||||
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Flexible | ||||||||||||
4 times | 12 | 3 min. | 25 min. | 25 min. | 80° | 125° | Not Rated | White | Yes | 12 | 0000000 | 0000000 |
4 times | 12 | 3 min. | 25 min. | 25 min. | 80° | 125° | Not Rated | White | Yes | 3 | 00000000 | 00000 |
8 times | 8 | 3 min. | 25 min. | 25 min. | 80° | 125° | Not Rated | White | Yes | 12 | 0000000 | 000000 |
8 times | 8 | 3 min. | 25 min. | 25 min. | 80° | 125° | Not Rated | White | Yes | 3 | 00000000 | 00000 |
15 times | 4 | 3 min. | 25 min. | 25 min. | 80° | 125° | Not Rated | White | Yes | 12 | 0000000 | 000000 |
15 times | 4 | 3 min. | 25 min. | 25 min. | 80° | 125° | Not Rated | White | Yes | 3 | 00000000 | 00000 |
Rigid—Machinable | ||||||||||||
2 times | 20 | 3 min. | 15 min. | 15 min. | 75° | 85° | Not Rated | Tan | Yes | 16 | 0000000 | 000000 |
7 times | 12 | 3 min. | 15 min. | 15 min. | 75° | 85° | Not Rated | Tan | Yes | 16 | 0000000 | 000000 |
7 times | 12 | 3 min. | 15 min. | 15 min. | 75° | 85° | Not Rated | Tan | Yes | 4 | 00000000 | 00000 |
19 times | 4 | 3 min. | 15 min. | 15 min. | 75° | 85° | Not Rated | Tan | Yes | 16 | 0000000 | 000000 |
19 times | 4 | 3 min. | 15 min. | 15 min. | 75° | 85° | Not Rated | Tan | Yes | 4 | 00000000 | 00000 |