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83A - FDA Approved
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88A - FDA Approved
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  Pyrathane® Materials

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Pyrathane® 88A is a polyester based polyurethane which is identical in appearance to our 83A Pyrathane®.  88A is extremely tough and durable, exhibiting high tensile strength as well as excellent abrasion resistance and flex life that compares to our 83A.  Our Pyrathane® 88A has been specifically selected for drive applications that require a higher load carrying capacity while continuing to provide a good long flex life.  Pyramid has over forty years of experience with a variety of polyurethanes and is pleased to offer this new 88A durometer material.

Belts of both flat and round cross section can be manufactured of the 88A material.

While the modulus of Pyrathane® 88A is higher than our standard 83A material we recommend a similar initial stretch of approximately 10% which will provide increased drive if needed.  Higher or lower stretch percentages can be utilized to increase or decrease the final belt tension.  Moderate variations can be used with little effect on belt life.

When considering 88A for your application, and when an initial stretch 10% is utilized, other general information provided in our product brochure will be applicable.

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This material is a more specialized version of our Pyrathane® products family and therefore a modest upcharge is associated with it.

This data is provided for general information and material comparison. The potential user should perform tests to determine the product's performance and suitability in the intended application. Final determination of the fitness of the product for any particular use is the responsibility of the buyer.
Pyramid Incorporated • 522 N 9th Ave E • PO Box 200 • Newton, IA 50208-0200