Page 3 - Cast Elastomers
P. 3

Material Data Sheet

A Division of American Polymers

                                            System Number 160711

Polycoat-Polycast® Polyester 70A

                                 Typical Physical Properties
                                       for Cured Material

Hardness                           Shore A                    70 ± 2
Ultimate Tensile                      PSI                     5105
Tensile Strength                                              1079
                                 PSI @100%                    3448
Ultimate Elongation              PSI @300%                     732
Die C Tear                                                     468
Split Tear                             %
Resilience                            PLI                       64
Compression Set                       PLI                       24
                                 % Rebound                      49
                                       %

Viscosity, cps                   Typical Physical Properties
Mix Ratio, by Weight                    for Components

                                                       AB

                                                   650 8750
                                                    69 100

                                 Processing Parameters

A-side Temperature                   ºF        90
B-side Temperature                   ºF        90
Mold Temperature                     ºF     150-200
Gel Time                         Seconds     90±20
Demold Time                      Minutes       25
Post Cure Time                    Hours        24

Note: A-side (Polycoat-Polycast® ISO 31181) MDI prepolymer is a modified MDI compound of diphenylmethane
diisocyanate and sufficient glycol used in all the above tested.

Note: The conditions of your use and application of our products, technical assistance and information (whether verbal, written or by
way of production evaluation), including any suggested formulations and recommendations, are beyond our control. Therefore, it is
imperative that you test our products, and request technical assistance and information to determine to your own satisfaction whether
they are suitable for your intended uses and application.

         14722 Spring Avenue, Santa Fe Springs, CA 90670-5108 USA ♦ Tel: 562/802-8834 ♦ Fax: 562/921-7363 ♦ www.polycoatusa.com ♦ Copyright© May 2011 Polycoat Products
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