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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Soft | ||||||||||||
Durometer 20A | 15 min. | 168 hrs. | 5 hrs. | 77° | 180° | 0.1% | Black | Yes | 25 | 1 | 0000000 | 000000 |
Durometer 20A | 15 min. | 168 hrs. | 5 hrs. | 77° | 180° | 0.1% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Firm | ||||||||||||
Durometer 40A | 15 min. | 168 hrs. | 5 hrs. | 77° | 180° | 0.1% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 40A | 15 min. | 168 hrs. | 5 hrs. | 77° | 180° | 0.1% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Durometer 60A | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 0.1% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 60A | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 0.1% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Hard | ||||||||||||
Durometer 80A | 15 min. | 168 hrs. | 3 hrs. | 77° | 180° | 0.1% | Black | Yes | 6 | 1/4 | 0000000 | 00000 |
Durometer 80A | 15 min. | 168 hrs. | 3 hrs. | 77° | 180° | 0.1% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 80A | 15 min. | 168 hrs. | 3 hrs. | 77° | 180° | 0.1% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Durometer 94A | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 0.1% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 94A | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 0.1% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Durometer 60D | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 0.1% | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 60D | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 0.1% | Black | Yes | 250 | 10 | 0000000 | 000000 |
Durometer 75D | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 0.1% | Black | Yes | 25 | 1 | 00000000 | 00000 |
Durometer 75D | 15 min. | 168 hrs. | 2 hrs. | 77° | 180° | 0.1% | Black | Yes | 250 | 10 | 00000000 | 000000 |
Durometer 85D | 5 min. | 2 hrs. | 1.5 hrs. | 77° | 180° | 0.1% | Green | Yes | 80 | 5 | 000000 | 00000 |
Durometer 85D | 5 min. | 2 hrs. | 1.5 hrs. | 77° | 180° | 0.1% | Green | Yes | 320 | 20 | 000000 | 000000 |
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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Firm | ||||||||||||
Durometer 60A | 15 min. | 168 hrs. | 3 hrs. | 75° | 180° | Not Rated | Dark Gray | Yes | 25 | 1 | 0000000 | 000000 |
Durometer 60A | 15 min. | 168 hrs. | 3 hrs. | 75° | 180° | Not Rated | Dark Gray | Yes | 100 | 4 | 0000000 | 000000 |
Hard | ||||||||||||
Durometer 85A | 15 min. | 168 hrs. | 3 hrs. | 75° | 180° | Not Rated | Black | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 85A | 15 min. | 168 hrs. | 3 hrs. | 75° | 180° | Not Rated | Black | Yes | 100 | 4 | 0000000 | 000000 |
Durometer 60D | 15 min. | 168 hrs. | 3 hrs. | 75° | 180° | Not Rated | Dark Gray | Yes | 25 | 1 | 00000000 | 00000 |
Durometer 60D | 15 min. | 168 hrs. | 3 hrs. | 75° | 180° | Not Rated | Dark Gray | Yes | 100 | 4 | 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 are tougher than silicone compounds, so your molds will last longer. 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.
Hardness | Time to Harden | Time to Cure | Time to Demold | Max. Temperature, °F | Shrinkage | Color | Mixing Required | Volume, cu. in. | Weight, lbs. | Each | |
Urethane | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Firm | |||||||||||
Durometer 40A | 6 min. | 144 hrs. @ 77° F | 2 hrs. @ 77° F | 180° | 0.8% | Clear | Yes | 25 | 1 | 00000000 | 000000 |
Durometer 60A | 6 min. | 144 hrs. @ 77° F | 2 hrs. @ 77° F | 180° | 0.8% | Clear | Yes | 25 | 1 | 00000000 | 00000 |
Hard | |||||||||||
Durometer 80A | 6 min. | 144 hrs. @ 77° F | 2 hrs. @ 77° F | 180° | 0.8% | Clear | Yes | 25 | 1 | 0000000 | 00000 |
Durometer 75D | 6 min. | 144 hrs. @ 77° F | 2 hrs. @ 77° F | 180° | 0.8% | Clear | Yes | 25 | 1 | 0000000 | 00000 |
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. Cast up to 1/2" in thickness at a time.
View our selection of release agents. View additional information about the hardness of this material.
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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hard | ||||||||||||
Durometer 84D | 6 min. | 168 hrs. | 90 min. | 72° | 130° | 1.5% | Gray | Yes | 72 1/2 | 5 | 00000000 | 0000000 |
Durometer 84D | 6 min. | 168 hrs. | 90 min. | 72° | 130° | 1.5% | Gray | Yes | 290 | 20 | 00000000 | 000000 |
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 | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Firm | |||||||||||||
Durometer 40A | 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 | 25 | 1 | 0000000 | 00000 |
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 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 |
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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Firm | ||||||||||||
Durometer 45A | 60 min. | 24 hrs. | 16 hrs. | 77° | 200° | 0% | Yellow | Yes | 58 | 2.2 | 0000000 | 0000000 |