Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dow SILASTIC LS 5-8750 Fluorosilicone Rubber

Dow SILASTIC LS 5-8750 Fluorosilicone Rubber is a high-performance liquid silicone rubber engineered for extreme temperature resistance, exceptional fuel and chemical compatibility, and outstanding compression set resistance. Developed by Dow, this LS-series fluorosilicone meets stringent aerospace and automotive sealing requirements while offering rapid cure kinetics and excellent processability in injection molding applications.
  • dow silastic ls 5 8750 fluorosilicone rubber_02d016ec
  • dow silastic ls 5 8750 fluorosilicone rubber_02d016ec

Features Of Dow SILASTIC LS 5-8750 Fluorosilicone Rubber

  1. Excellent resistance to aggressive fuels, lubricants, and polar solvents including jet fuels (JP-4, JP-8), synthetic oils, and phosphate ester hydraulic fluids.

  2. Broad operating temperature range from –60 °C to +200 °C, maintaining elastomeric integrity under extreme thermal cycling.

  3. Superior compression set resistance compared to standard silicone rubbers, ensuring long-term sealing performance in static and dynamic applications.

  4. Good low-temperature flexibility and retention of physical properties after prolonged exposure to elevated temperatures.

  5. Fluorosilicone chemistry provides enhanced resistance to swelling and degradation in fluorinated environments where conventional silicones fail.

Typical Applications Of Dow SILASTIC LS 5-8750 Fluorosilicone Rubber

  1. Aerospace fuel system seals, gaskets, and O-rings exposed to aviation fuels and hydraulic fluids.

  2. Automotive turbocharger hose liners and under-hood sealing components requiring fuel and oil resistance.

  3. Industrial fluid handling systems for chemical processing equipment handling aggressive solvents and synthetic lubricants.

  4. Defense and marine applications involving extended exposure to jet fuels, MIL-PRF-27617 fluids, and seawater-contaminated hydrocarbons.

  5. Oil & gas downhole instrumentation seals requiring stability in sour gas (H₂S) and aromatic-rich hydrocarbon environments.

Specifications Of Dow SILASTIC LS 5-8750 Fluorosilicone Rubber

Chemical TypeFluorosilicone elastomer (FVMQ)
Product FormHigh-consistency rubber (HCR), two-part platinum-cure system
AppearanceOff-white to light tan, homogeneous gum stock
Primary ApplicationsStatic and dynamic seals, gaskets, diaphragms, and molded parts for demanding fluid environments
Key FeaturesFuel/oil resistance, wide service temperature range, low compression set, excellent aging stability
Processing MethodCompression molding, transfer molding, or injection molding (with appropriate equipment)
Cure SystemPlatinum-catalyzed addition cure
Regulatory ComplianceMeets ASTM D1418 classification FVMQ; compliant with AMS 3325 and MIL-R-25988 (Type II)


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