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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.
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 | Max. Temperature, °F | Shrinkage | Color | Mixing Required | Volume, cu. in. | Weight, lbs. | Each | |
Urethane | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Hard | |||||||||||
Durometer 80A | 6 min. | 144 hrs. @ 77° F | 2 hrs. @ 77° F | 180° | 5% | Clear | Yes | 25 | 1 | 0000000 | 000000 |
Durometer 75D | 6 min. | 144 hrs. @ 77° F | 2 hrs. @ 77° F | 180° | 5% | Clear | Yes | 25 | 1 | 0000000 | 00000 |
Silicone Rubber | |||||||||||
Firm | |||||||||||
Durometer 40A | 15 min. | 1.5 hrs. @ 77° F, 30 min. @ 120° F | 1.5 hrs. @ 77° F, 30 min. @ 120° F | 570° | 0% | Blue | Yes | 57 | 2.2 | 0000000 | 00000 |
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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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 |
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 | |
Epoxy | ||||||||||||
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Hard | ||||||||||||
Durometer 86D | 50 min. | 18 hrs. | 18 hrs. | 75° | 130° | 1.5% | Gray | Yes | 40 | 2.7 | 00000000 | 000000 |
Aluminum-Filled Urethane | ||||||||||||
Hard | ||||||||||||
Durometer 83D | 6 min. | 18 hrs. | 2 hrs. | 75° | 175° | 1.5% | Gray | Yes | 83 | 5 | 00000000 | 00000 |
Durometer 83D | 6 min. | 18 hrs. | 2 hrs. | 75° | 175° | 1.5% | Gray | Yes | 334 | 20 | 00000000 | 000000 |
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. Use them to make your own prototypes, molds, and linings.
Combine acrylic or silicone with a 69° cure temperature 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 with a 70° cure temperature compounds are a putty that you can mix with your hands and form into any shape. Press an object into these compounds to create a mold for casting duplicates. They do not shrink as they dry, so textures and other fine details are captured faithfully. Soft silicone is more flexible and easier to peel off of 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 collapse or deform while making molds.
Compounds with dispenser gun come ready to use—no mixing required—and won’t leave a mess.
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 | |
Acrylic | ||||||||||||
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Hard | ||||||||||||
Durometer 85D | 2 min. | 11 min. | 11 min. | 69° | 350° | 1.5% | Light Blue | Yes | 20 | 1 | 0000000 | 0000000 |
Durometer 85D | 2 min. | 11 min. | 11 min. | 69° | 350° | 1.5% | Light Blue | Yes | 62 | 3 | 0000000 | 000000 |
Silicone | ||||||||||||
Soft | ||||||||||||
Durometer 27A | 2 min. | 15 min. | 15 min. | 70° | 650° | 0% | Light Blue | Yes | 4 | 0.2 | 0000000 | 00000 |
Durometer 27A | 2 min. | 15 min. | 15 min. | 70° | 650° | 0% | Light Blue | Yes | 46 | 2.2 | 0000000 | 00000 |
Durometer 30A | 2 min. | 10 min. | 10 min. | 69° | 250° | 0% | Green | Yes | 8 | 1 | 0000000 | 00000 |
Durometer 30A | 2 min. | 10 min. | 10 min. | 69° | 250° | 0% | Green | Yes | 23 | 2 | 0000000 | 000000 |
Firm | ||||||||||||
Durometer 40A | 2 min. | 15 min. | 15 min. | 70° | 600° | 0% | Green | Yes | 4 | 0.2 | 0000000 | 00000 |
Durometer 40A | 2 min. | 15 min. | 15 min. | 70° | 600° | 0% | Green | Yes | 46 | 2.2 | 0000000 | 00000 |
Durometer 50A | 2 min. | 10 min. | 10 min. | 69° | 250° | 0% | Light Blue | Yes | 13 | 1 | 0000000 | 00000 |
Durometer 50A | 2 min. | 10 min. | 10 min. | 69° | 250° | 0% | Light Blue | Yes | 32 | 2 1/2 | 0000000 | 000000 |
Hardness Rating | Hardness | Time to Harden | Time to Cure | Time to Demold | Color | Cure Temperature, °F | Max. Temperature, °F | Shrinkage | Mixing Required | Weight, lbs. | Includes | Each | |
Silicone | |||||||||||||
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Soft | Durometer 30A | 2 min. | 10 min. | 10 min. | Green | 69° | 250° | 0% | No | 4 | Carrying Case, Six each 3 cu. in. Disposable Cartridges | 0000000 | 0000000 |
Soft Firm | Durometer 30A Durometer 55A | 2 min. 2 min. | 10 min. 6 min. | 10 min. 6 min. | Green Orange | 69° | 250° | 0% | No | 4 | Carrying Case, Six each 3 cu. in. Disposable Cartridges | 0000000 | 000000 |
Firm | Durometer 55A | 2 min. | 6 min. | 6 min. | Orange | 69° | 250° | 0% | No | 4 | 15 Disposable Nozzles, 2 Snap-On Nozzles, Carrying Case, Six each 3 cu. in. Disposable Cartridges | 0000000 | 000000 |
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 | 00000 |
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 | 00000 |
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.
Capture intricate details when creating prototypes, molds, and linings with these easy-to-mix compounds.
Alumina is high strength.
High-purity alumina resists shrinking in casts, has a low level of contamination, and is a strong electrical insulator. It’s often used for constructing furnaces and handling liquid metal.
Silicon carbide has a high heat transfer rate, making it ideal for use in metal casting molds. It has the added benefit of excellent erosion and oxidation resistance.
Silica withstands rapid changes in temperature without cracking and has a low rate of thermal expansion.
Zirconium oxide is often used in metal handling applications. In addition to its high temperature resistance, it’s also chemical resistant.
View our selection of release agents.
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 | |
Alumina | |||||||||||
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20 min. | 24 hrs. | 24 hrs. | 77° | 3000° | 1.5% | White | Yes | 38 | 4 | 0000000 | 000000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 3000° | 1.5% | White | Yes | 96 | 10 | 0000000 | 000000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 3000° | 1.5% | White | Yes | 480 | 50 | 0000000 | 000000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 3000° | 1.5% | White | Yes | 960 | 100 | 0000000 | 000000 |
High-Purity Alumina | |||||||||||
25 min. | 24 hrs. | 24 hrs. | 77° | 3200° | 1.5% | White | Yes | 98 | 10 | 0000000 | 000000 |
25 min. | 24 hrs. | 24 hrs. | 77° | 3200° | 1.5% | White | Yes | 490 | 50 | 0000000 | 000000 |
Silicon Carbide | |||||||||||
20 min. | 24 hrs. | 24 hrs. | 77° | 2700° | 1.5% | Black | Yes | 47 | 4 | 0000000 | 00000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 2700° | 1.5% | Black | Yes | 119 | 10 | 0000000 | 000000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 2700° | 1.5% | Black | Yes | 595 | 50 | 0000000 | 000000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 2700° | 1.5% | Black | Yes | 1,190 | 100 | 000000 | 000000 |
Silica | |||||||||||
20 min. | 24 hrs. | 24 hrs. | 77° | 2700° | 1.5% | White | Yes | 62 | 4 | 0000000 | 00000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 2700° | 1.5% | White | Yes | 155 | 10 | 0000000 | 000000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 2700° | 1.5% | White | Yes | 785 | 50 | 0000000 | 000000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 2700° | 1.5% | White | Yes | 1,570 | 100 | 0000000 | 000000 |
Zirconium Oxide | |||||||||||
20 min. | 24 hrs. | 24 hrs. | 77° | 4000° | 1.5% | Tan | Yes | 27 | 4 | 0000000 | 00000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 4000° | 1.5% | Tan | Yes | 69 | 10 | 0000000 | 000000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 4000° | 1.5% | Tan | Yes | 340 | 50 | 0000000 | 000000 |
20 min. | 24 hrs. | 24 hrs. | 77° | 4000° | 1.5% | Tan | Yes | 690 | 100 | 0000000 | 00000000 |
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 | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 |
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.
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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Firm | ||||||||||||
Durometer 45A | 60 min. | 24 hrs. | 16 hrs. | 77° | 200° | 0% | Yellow | Yes | 58 | 2.2 | 0000000 | 000000 |
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.
View our selection of release agents. View additional information about the hardness of these materials.