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

Dow SILASTIC LS-422 Fluorosilicone Rubber

Dow SILASTIC LS-422 Fluorosilicone Rubber is a high-performance elastomer from Dow’s SILASTIC™ LS series offering exceptional resistance to fuels, oils, and extreme temperatures (–65°C to 200°C), excellent compression set retention, and superior chemical stability—ideal for demanding aerospace, automotive, and oilfield sealing applications.
  • dow silastic ls 422 fluorosilicone rubber_67f17298
  • dow silastic ls 422 fluorosilicone rubber_67f17298

Features Of Dow SILASTIC LS-422 Fluorosilicone Rubber

  1. Excellent resistance to fuels, lubricants, and aggressive hydrocarbon-based fluids across wide temperature ranges.

  2. Retains superior low-temperature flexibility down to –55 °C (–67 °F) without compromising chemical resistance.

  3. Enhanced compression set resistance compared to standard silicone elastomers, ensuring long-term sealing integrity.

  4. Good electrical insulation properties stable over time and under thermal stress.

  5. Processable via conventional high-temperature vulcanization (HTV) methods including compression, injection, and transfer molding.

Typical Applications Of Dow SILASTIC LS-422 Fluorosilicone Rubber

  1. Aerospace fuel system seals and gaskets exposed to jet fuels (e.g., JP-8, Jet A) and synthetic lubricants.

  2. Automotive under-hood components requiring resistance to engine oils, transmission fluids, and exhaust gas recirculation (EGR) environments.

  3. Oil & gas downhole instrumentation seals subjected to sour service (H₂S), crude oil, and drilling muds.

  4. Industrial fluid-handling systems including pumps, valves, and connectors in chemical processing plants.

  5. Medical device components requiring biocompatibility support and resistance to sterilization agents and cleaning solvents.

Specifications Of Dow SILASTIC LS-422 Fluorosilicone Rubber

Chemical TypeFluorosilicone elastomer (FVMQ)
Product FormHigh-consistency gum stock (uncured compound)
AppearanceOpaque, uniform colored rubber sheet or slab
Primary ApplicationsStatic and dynamic seals, gaskets, diaphragms, and molded parts
Key FeaturesFuel/oil resistance, low-temperature flexibility, compression set resistance
BenefitsExtended service life in harsh chemical environments, reduced maintenance frequency
Curing SystemPeroxide-curable (requires high-temperature vulcanization)
Processing CompatibilityCompatible with standard silicone rubber processing equipment


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