
                HYTREL®
                
                Hytrel 
                  is a copolyester elastomer that demonstrates excellent low temperature 
                  flex characteristics as well as the ability to perform at a 
                  considerably higher temperature level than our standard 83A 
                  PYRATHANE.
                  
                  Temperatures as low as -40 F and as high as +200 F are possible.
                  
                  Hytrel has excellent resistance to a wider variety of chemicals 
                  allowing its use in applications urethanes could not tolerate.
                  
                  Belts of both flat and round configurations can be manufactured 
                  of the Hytrel material.
                  
                  As the modulus of Hytrel is considerably higher than our 83A 
                  material, we would recommend an initial stretch of approximately 
                  5% which still provides more tension than our PYRATHANE 83A.
                  
                  Hytrel can sometimes provide necessary low temperature flexibility 
                  or chemical tolerance which may offset its poorer abrasion resistance.
                  
                  When considering Hytrel for your application, only the general 
                  information provided in our product brochure will be applicable. 
                  Please call us with any questions.
                This 
                  material is a more specialized version of our PYRATHANE products 
                  family and therefore a modest upcharge is associated with it.
                
                   
                    | Designation | HYTREL 
                         | 
                   
                    | Shore 
                        A Hardness ASTM D 2240 |  92 
                        +/- 3 
                     | 
                   
                    | Ultimate 
                        Tensile Strength In PSI ASTM D 638 |  4000 
                     | 
                   
                    | Ultimate 
                        Elongation % ASTM D 638 |  550 
                     | 
                   
                    | Tensile 
                        Modules In PSI ASTM D 638 At 
                        5% Elongation At 
                        10% Elongation 
                     |  -  
                        340 
                        530 
                     | 
                   
                    | Tear 
                        Strength ASTM D 1004 / PLI Die "C" |  580 
                     | 
                   
                    | Advantages | Flexibility 
                        at lower temperatures / Elevated temperature tolerance 
                        / Higher torque carrying capacity / Wider chemical resistivity | 
                   
                    | Disadvantages 
                        (relative to our 83A material) | Poor 
                        abrasion resistance | 
                
                
                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.
                Hytrel® 
                  is a registered trademark of E.I. DuPont Nemours & Co.