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Precision Polymer Engineering S50D Silicone Rubber

Category Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE) , Silicone
Manufacturer Precision Polymer Engineering Limited
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Precision Polymer Engineering S50D Silicone Rubber.pdf
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Material Notes:
Black Silicone Rubber, 46-55 °IRHD. Silicone rubber having both methyl and vinyl substituent groups on the polymer chain. Formulated to meet UK Ministry of Defence Aircraft Materials Specification DTD5531A Grade 50. ASTM & ISO designation = VMQ.Applications: Sheets, mouldings and extrusions for mainly mechanical applications in contact with air within the quoted temperature range. They are not intended for liquid sealing or for application where low compression set is of prime importance. Occasional contamination by silicate ester and phosphate ester hydraulic fluids and greases is not unduly detrimental, provided the temperature is not excessive. Contact with fuels, light mineral oils, silicone liquids or greases derived from these should be avoided. Excellent ozone resistance.
Mechanical Properties Metric English Comments
Hardness, Shore A 50
50
°IRHD; ASTM D1415
47 - 57
47 - 57
°IRHD, -3/+7 change after 336 hours @ 200°C; ASTM D1415
Tensile Strength, Yield 5.60 MPa
812 psi
-20% change after 336 hours @ 200°C; ASTM D412
7.00 MPa
1020 psi
ASTM D412
Elongation at Break 245 %
245 %
-30% change after 336 hours @ 200°C; ASTM D412
350 %
350 %
ASTM D412
Compression Set 15 %
15 %
24 hours @ 175°C; ASTM D395
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 250 °C
482 °F
Minimum Service Temperature, Air -65.0 °C
-85.0 °F
-65.0 °C
-85.0 °F
Non-brittle after 3 minutes
Flash Point >= 300 °C
>= 572 °F
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