Distributor For
Bluestar Silicones & pathwaypolymers

If you have questions or requests, contact us at: 214-630-8657
or toll free at:
1-866-631-2600
jim@sunbeltmaterials.com

 Pathway Polymers 
 

 
 
 
 
 
 
 
 

 

 

 

 

Por-A-Kast

The Por-A-Kast Products
If you're like most of our customers, you'll begin using Por-A-Kast for practicality's sake-it's durable, can be sanded and drilled, duplicates detail beautifully, and holds up even under the toughest circumstances. But the next thing you know, you'll be coming up with all kinds of creative ideas. You'll find you can carve Por-A-Kast, pigment it, and paint it. You'll come up with a million and one ways to fill and color it to achieve special looks and textures. You'll find yourself creating piece after piece, challenging Por-A-Kast to show off its ability to handle intricate detail and create stunning effects.

So, whether you're building computer parts, cinema models, architectural molding, or duck decoys, look to Por-A-Kast. There's nothing like it to spur the imagination.


Physical Properties of Por-A-Kast Products

Property

Clear Casting Resin

370D

Mark 1

Mark 2

Mark 3

Mark 15

Shore Hardness

D84

D70

D73

D73

D72

D80

Specific Gravity (Cured Elastomer)

1.05

1.05

1.05

1.05

1.05

1.14

Ultimate Tensile, PSI

6456

6000

4700

4700

5000

8000

Elongation, %

<10

<10

15

15

<10

<10

Rebound, Bashore, %

18

50

30

30

55

20

Reversion Temps.
270°F
(132°C)

270°F (132°C)

270°F (132°C)

270°F (132°C)

270°F (132°C)
270°F
(132°C)

Shrinkage, in/in

.0015

N/A

.0065

.0098

.01

<.001

Mix Ratio by Weight (Curative:Prepolymer)

1:1.04

0.885:1

1:1.12

0.901:1

0.903:1

1:1.09

Mix Ratio by Volume (Curative:Prepolymer)

1:1

1:1

1:1

1:1

1:1

1:1

Resin Shelf Life (Months)

6

6

6

6

6

6

Pot Life* (Minutes)

16

3

2

2

3

15

Cure Temperature

160°F (71°C)
72°F (22°C)

75°F
(24°C)

75°F
(24°C)

75°F
(24°C)

75°F
(24°C)

160°F (71°C)
72°F (22°C)

Demold Time* (min.)

Cure Time* (hours)

480 (8 hrs.)

24

15-20

24

30

24

30

24

30

24

60

24

Color

Clear

Creamy white

Off-white

White

White

White


*Pot life and cure time will vary with mass, mold temperature, and the temperature of the components.

For Material Safety Data Sheets (MSDS) please contact us.

The conditions for your use and application of our products, technical assistance and information (whether verbal, written or by way of production evaluations), including any suggested formulations and recommendations, are beyond our control. Therefore, it is imperative that you test our products, technical assistance and information to determine to your own satisfaction whether they are suitable for your intended uses and applications. This application-specific analysis at least must include testing to determine suitability from a technical as well as health, safety, and environmental standpoint. Such testing has not necessarily been done by Pathway Polymers. All information is given without warranty or guarantee. It is expressly understood and agreed that customer assumes and hereby expressly releases Pathway Polymers from all liability, in tort, contract or otherwise, incurred in connection with the use of our products, technical assistance and information. Any statement or recommendation not contained herein is unauthorized and shall not bind Pathway Polymers. Nothing herein shall be construed as a recommendation to use any product in conflict with patents covering any material or its use. No license is implied or in fact granted under the claims of any patent.
Updated July 12, 2005