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KE-551-U

Technical Datasheet | Supplied by Shin-Etsu
KE-551-U is a general purpose silicone rubber by Shin-Etsu, containing 1.0 of C-23N and 0.5/2.0 of C-25A/B curing agent added to 100 parts of compound. It is highly transparent, non-corrosive, inert and can be easily colored with pigments. Shows releasability, good chemical stability, electrical insulation and good weatherability. Offers thermal- & electrical conductivity, tear- & tensile strength, gas & vapor permeability, low loss modulus and vibration absorption. Provides superior heat-, cold-, flex fatigue-, radiation-, compression-, oil-, solvent-, moisture-, steam- and chemical resistance. KE-551-U is suitable for processing by extrusion and compression moldng. Used in tubes for beverages. Meets FDA and BfR.
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Product Type
Silicone Rubber
Appearance
Milky white translucent
Product Status
COMMERCIAL

KE-551-U Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Williams Plasticity
200
(10 min after remix, Press cure - 120°C x 10min, Post cure - 200°C x 4hrs)
Density
1.14 g/cm³
(23°C, Press cure - 120°C x 10min, Post cure - 200°C x 4hrs)

KE-551-U Processing Guidelines

Compression Molding Properties

Value & Unit
Test Condition
Test Method
Pressure, C-23N
2.9 - 4.9 MPa
Pressure, C-25A/B
2.9 - 5.9 MPa
Compression Molding Temperature, C-23N
120 - 125 °C
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