Rubber Mold Compounds & Plastics
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Urethane Foams
Foams do NOT contain Formaldehyde
The Smooth-On Difference
in Foams:
Smooth-On's urethane foams have numbers describing their respective
densities. The number refers to the amount of foam in pounds that is
contained in a cubic foot. The higher the number, the more dense the
foam, and the less expansion. Foams with lesser densities expand at
greater rates.
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FOAM-iT! Series
3lb, 5lb, 8lb, 10lb, & 15lb Density Rigid Polyurethane Foams
| Smooth-on
Rigid Foam |
Foam-iT! 3 |
Foam-iT! 5 |
Foam-iT! 8 |
Foam-iT! 10 |
Foam-iT! 15 |
| Mix Ratio |
1A:1B by vol |
1A:1B by vol |
2A:1B by weight |
1A:1B by vol |
1A:1B by vol |
| Mixed A + B
Viscosity |
200 cps |
300 cps |
300 cps |
400 cps |
500 cps |
| Pot Life
(Cream Time) |
1 minute |
1.5 minutes |
1.5 minutes |
1.5 minutes |
1.5 minutes |
| Tack-Free Time |
6.5 minutes |
5 minutes |
5 minutes |
5 minutes |
4 minutes |
| Handling
Strength |
20 minutes |
20 minutes |
20 minutes |
20 minutes |
20 minutes |
| Demold Time |
2 hours |
2 hours |
2 hours |
2 hours |
2 hours |
| Grams / Cubic
Inch |
0.04 - 0.06 |
0.08 - 0.10 |
0.12 - 0.14 |
0.15 - 0.17 |
0.22 - 0.26 |
FlexFoam-iT!
Series
Flexible Polyurethane Foams
Key Values
~Mixing Ratios: FlexFoam-iT! III: 1A:2B by volume (57.5A
: 100B by weight)
FlexFoam-iT! V & X: One to One by volume, (105A
:100B by weight)
FlexFoam-iT! 25: 1A:2B by weight
~Pot Life : FlexFoam-iT! III: 35 seconds
FlexFoam-iT! V, X and 25: 50 seconds |
| Components |
Color |
Viscosity |
S.G. g/cm³ |
S.V. cu.
in./lb. |
Lbs/Cu
Ft=Kg/Cu Meter |
| Mix Part A + B |
White |
1000 cps |
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| FlexFoam-iT! III |
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0.06 |
400 - 450 |
3 lb/ft³ = 48
kg/m³ |
| FlexFoam-iT! V |
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0.1 |
275 - 300 |
5 lb/ft³ = 80
kg/m³ |
| FlexFoam-iT! X |
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0.18 |
150 - 200 |
10 lb/ft³ =
160 kg/m³ |
| FlexFoam-iT! 25 |
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0.4 |
50 - 75 |
25 lb/ft³ =
400 kg/m³ |
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