Overnight Cure Semi-Rigid Urethane Elastomers

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Mix Ratio
(by weight)
Mix Ratio
(by volume)
Cast
Thickness
Gel Time
(min.) @ 72°F
Demold Time
(hr.) @ 72°F
Shore
Hardness
Mixed Viscosity
(cps)
Density
(g/cc)
Volumetric
Yield (in.3/lb.)
Shrink
(in./in.)
Tensile
Strength (psi)
Elongation
(%)
Tear
Strength 
(ppi)
Deflection
Temp (°F)
Color
1:1
100:94
4"
26
16
85A
1,650
1.10
25.2
0.001
2,050
510
280
Light Amber
100:60
100:60
2"
28
16
60D
2,600
1.05
26.4
0.001
3,200
300
510
Red, Black
100:50
100:50
2"
15-17
2-4
65D
3,200
1.03
26.9
0.0025
3,100
140
630
181
Red, Black
100:40
23
16
90A
2,000
1.06
26.6
1,500
460
350
Yellow
100:60
100:60
3"
25
24
60D
2,200
1.06
26.3
<0.002
3,600
325
135
Amber, Red, Black
35:100
31:100
1"
31-33
24
82A
940
1.08
25.6
0.001
2,172
270
285
-
Off White
50:100
44:100
1/2"
20
24
85-90A
710
1.10
25.2
0.001
3,334
328
419
Off White
1:1
100:94
4"
28
24
85A
1,610
1.09
25.4
<0.001
2,100
525
290
Light Amber
100:60
100:60
2"
19
24
95A
2,450
1.06
26.1
0.001
3,500
475
375
Light Amber
100:60
100:60
2"
27
24
60D
2,500
1.08
25.6
0.001
3,400
325
550
154
Light Amber
100:60
100:60
2"
27
24
60D
2,500
1.05
26.4
0.001
3,400
325
550
Red
77:23
4"
30
10
87A
10,000
1.04
26.5
0.0018
2,100
650
350
Black
69:31
4"
10
5
97A
6,000
1.04
26.5
0.0014
2,800
500
415
Black
96:100
1:1
2"
12
24
70-74A
2,650
1.06
26.1
0.001
1,568
900
264
Dark Amber
ASTM
D-2471
D-2240
D-2393
D-792
D-792
D-2566
D-638
D-790
D-624



For comparison, you may also want to check out:
    Rapid Cure Urethane Elastomers
    Overnight Cure Urethane Elastomers - Flexible
    Overnight Cure Urethane Elastomers - Semi-Rigid
    Overnight Cure Urethane Elastomers - Rigid