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Kalrez® Comparison of compounds

Physical Properties 

Kalrez® perfluoroelastomer parts are available in a number of different compounds that are formulated to optimize properties to give the best possible performance in various applications. Modification of the finished properties is achieved by use of fillers and other additives.
This table summarizes the basic physical properties of the most commonly used Kalrez® products for the chemical and hydrocarbon processing industries. Descriptions of the key attributes for each product and their general areas of application follow.

Compounds Standard Specialty
6375 7075 4079 1050LF 6380 7090 0090 0040
Durometer Hardness (2),
Shore A, points +/-5 75 75 75 82 80 90 95 70
100% Modulus (3) PSI 1050 1100 1050 1800 1000 2250 2060 960
MPa 7.24 7.58 7.24 12.40 6.89 15.51 14.20 6.61
Tensile Strength at Break (3) PSI 2200 2600 2450 2700 2300 3300 2830 1990
MPa 15.16 17.91 16.88 18.60 15.86 22.75 19.51 13.72
Elongation at Break (3) % 160 160 150 125 160 75 80 180
Compression Set (4), %
70 hours at 204°C (400°F) 30 12 25 35 38 12 40 38
Tr10 (5) °C -3 -4 -2 -4 -5 -5 -7 -17
°F 26.6 24.8 28.4 24.8 23.0 23.0 19.4 1.4

(1) Not to be used for specifications  (2) ASTM D2240   (3) ASTM D412, 500 mm/min (20 in/mm)  (4) ASTM D395B pellets  (5) ASTM D1329

 

 

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