High heat resistance grade EA series
(ESTERAR / TPC)

Features

1. Excellent cold resistance, ozone resistance, and flow characteristics.
2. Excellent resistance to alkaline inorganic chemicals.
3. It can be lighter than cross-linked rubber.
4. Excellent compression set properties at high temperatures.
5. Demonstrates excellent heat aging resistance and oil resistance while maintaining flexibility.
6. Suitable as a substitute for silicone rubber, acrylic rubber, and fluoro rubber.
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Properties

ARONKASEI CO., LTD.

Item Test Method Unit

EA-A55N

(Development product)

EA-A70CR

(※3)

EA-A80CR

(※3)

Characteristic - High heat resistance (Low CS)
Hardness JIS K 6253 typeA point 55 67 78
Specific Gravity JIS K 7112 - 1.14 1.12 1.13
Melt Flow Rate ASTM D 1238 230℃×98N g/10min 1 0.5 5.0
Tensile strength JIS K 6251 MPa 4.4 5.4 8.0
Elongation % 720 210 240
Tear Strength JIS K 6252 kN/m 34 23 36
Rebound resilience JIS K 6255 % 20 35 36
Taber abrasion Test JIS K 6264 H22×9.8N×1000Cycle mg 52 357 295
Compression Set JIS K 6262 70℃×24hr %

40

28 35
120℃×24hr 42 34 40
150℃×24hr 47 45 51
Softening Temperature our method  ※1 96 186 193
Brittleness Temperature JIS K 7216 -20℃ -44℃ -47℃
Mold Shrinkage
(Vertical/Flowing directions)
our method  ※2 % 1.8 / 4.3 1.5 / 3.6 1.4 / 3.0
Molding Method - - Injection ・ Extrusion
Flame Retardance UL-94 - HB equivalent
Drying - necessary(80~90℃×3~4hour)
Color - - Natural

The values shown in the table are representative ones and not guaranteed.
The figures in the table are subject to change without notice.
Reproduction of this information without our consent is prohibited.
※1 Softening temperature measurement method: Vicat softening temperature (at temperature rise rate of 50℃/hour and load of 2.5N)was determined with a needle inserted by 1mm.
※2 Shrinkage:A film gate sheet (126mm x 126mm x 2mm)was formed (at mold temperature of 40℃ and cooling period of 40 seconds).
※3 This is a grade that is made to order and sold.

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