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FE-251-U

Technical Datasheet | Supplied by Shin-Etsu
FE-251-U is a fluorosilicone rubber by Shin-Etsu, containing 0.8 of C-8A curing agent. It is highly resistant to high & low temperatures, solvents, oil, flex fatigue and silicone fluids. Shows excellent workability. FE-251-U is suitable for processing by compression moldng. Used in flame-resistant diaphragms, check valves, gaskets and O-rings.
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Product Type
Fluoroelastomer / Fluorinated Rubber > Fluoro Silicone Rubbers [FMQ (or FVMQ)]
Appearance
Yellow
Product Status
COMMERCIAL

FE-251-U Properties

Mechanical Properties

Value & Unit
Test Condition
Test Method
Tensile Strength
9.8 MPa
(Press cure- 165°C x 10 min, Post cure- 200°C x 4hrs)
100% Modulus
1.9 MPa
(Press cure- 165°C x 10 min, Post cure- 200°C x 4hrs)
200% Modulus
4.4 MPa
(Press cure- 165°C x 10 min, Post cure- 200°C x 4hrs)

FE-251-U Processing Guidelines

Compression Molding Properties

Value & Unit
Test Condition
Test Method
Compression Molding Temperature
165 - 170 °C
Molding Time (5-10 mm thickness)
15 - 30 min
Molding Time (10-25 mm thickness)
30 - 60 min
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