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The Joy of Rubber & Plastics

Written by John M. Bonforte, Sr.,
Monmouth Rubber & Plastics Corp.

The ‘Joy of Rubber & Plastics‘ is our 34-page educational booklet, containing definitions, practical advice and explanations concerning closed cell materials.


This book was written for all of us who grew up in a time when closed cell sponge rubber was a taboo subject. One which we dare not ask either our parents or grandparents to explain, let alone a sales manager. If you are like most people from our generation, you had to learn about closed cell sponge on the streets or in dark alleys. Even after we progressed into our respective business careers little, if any, information was available as to the basic facts of how closed cell sponge is made and used. This book is an attempt to bring this verboten subject out of the closet and perhaps maybe some day even into the classroom.

Chapter One will be a definition of terms. Before going into a brief description of what closed cell sponge is and how it is made, it is important that certain basic terms used in the industry are defined. Keep in mind when reading these definitions that they have often been misused and that you are probably accustomed to hearing them used in the wrong way. While your proper understanding of these terms is necessary, the most important point is that your technical communication with the factory be correct.


The ‘JOY OF RUBBER & PLASTICS’ is Free to read and download.

Equivalent Replacements For American National Rubber (ANR) Stock Numbers

Monmouth Rubber & Plastics offers Closed Cell Sponge Rubber & Plastic Foam Stocks that are Equivalent Replacements For American National Rubber Stock Numbers

Durafoam™ closed cell sponge rubber and plastic foam has been supplied to gasket cutters, fabricators and resellers without interruption for over 40 years for use in such applications as foam tape, automotive gaskets, expansion joints, filler strips in concrete, shoe inner sole padding, and athletic and medical specialties.

Durafoam™ is manufactured in the form of buns, sheets, rolls, tape, and specialty laminations. All Durafoam™ products are 100% recyclable AND DO NOT CONTAIN ANY CFCs.

Click here for a chart of our equivalent replacements for ANR sponge rubber and plastic foam stock numbers.

The Monmouth Rubber & Plastics stock numbers, we believe, are comparable to the ANR (American National Rubber) stock numbers based on their published physical properties charts, as of December 1, 2008. When considering a competitive comparable material, please keep in mind that some materials have unique physicals that are not part of the recognized industry specifications and standards.

Free Rubber Samples Equivalent Replacements For American National Rubber Stock Numbers

Customer sample evaluation and approval of any substitution is suggested. MRPC will supply free of charge samples and testing of its materials to assist customers in their evaluation. For a Monmouth Rubber equivalent to an ANR stock you are using, please contact:


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