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

Dow SILASTIC LS-2840 Fluorosilicone Rubber

Dow SILASTIC LS-2840 Fluorosilicone Rubber is a high-performance liquid silicone rubber offering exceptional resistance to fuels, oils, and solvents while maintaining wide temperature stability (–60°C to 200°C). Designed for demanding aerospace and automotive sealing applications, it cures rapidly via platinum-catalyzed addition curing and delivers outstanding compression set resistance and low-temperature flexibility.
  • dow silastic ls 2840 fluorosilicone rubber_8c0de687
  • dow silastic ls 2840 fluorosilicone rubber_8c0de687

Features Of Dow SILASTIC LS-2840 Fluorosilicone Rubber

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

  2. Superior high-temperature stability with continuous service capability up to 200 °C (392 °F).

  3. Outstanding low-temperature flexibility down to –60 °C (–76 °F) without brittle failure.

  4. Low compression set retention for reliable sealing performance in dynamic and static applications.

  5. Good electrical insulation properties and inherent flame resistance (UL 94 HB rated).

Typical Applications Of Dow SILASTIC LS-2840 Fluorosilicone Rubber

  1. Aerospace fuel system seals and gaskets exposed to jet fuels and synthetic lubricants.

  2. Automotive under-hood components including turbocharger hoses and sensor boots.

  3. Oil & gas downhole instrumentation seals requiring chemical and thermal resilience.

  4. Medical device tubing and connectors where biocompatibility and fluid compatibility are critical.

  5. Industrial hydraulic systems operating with phosphate ester or Skydrol®-type fluids.

Specifications Of Dow SILASTIC LS-2840 Fluorosilicone Rubber

Chemical TypeFluorosilicone elastomer (FVMQ)
Product FormTwo-part liquid silicone rubber (LSR), platinum-cured
AppearanceTranslucent to off-white viscous liquid (Part A); colorless catalyst (Part B)
Primary ApplicationsHigh-performance static and dynamic seals, gaskets, and molded parts
Key FeaturesFuel/oil resistance, wide thermal range, low compression set, electrical insulation
BenefitsExtended service life in harsh chemical environments; reduced maintenance and replacement frequency
Cure SystemPt-catalyzed addition cure (no by-products)
Shelf Life12 months at 25 °C (77 °F) in unopened original packaging


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