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

Dow SILASTIC LS-2940 U Fluorosilicone Rubber

Dow SILASTIC LS-2940 U Fluorosilicone Rubber is a high-performance liquid silicone rubber engineered for extreme temperature resistance, excellent fuel and chemical compatibility, and low compression set. Part of Dow’s SILASTIC fluorosilicone series, it cures rapidly via platinum-catalyzed addition curing, offering superior stability in aerospace and automotive sealing applications where conventional silicones fall short.
  • dow silastic ls 2940 u fluorosilicone rubber_d9540515
  • dow silastic ls 2940 u fluorosilicone rubber_d9540515

Features Of Dow SILASTIC LS-2940 U Fluorosilicone Rubber

  1. Exceptional resistance to aggressive fuels, lubricants, and polar solvents including Skydrol® hydraulic fluid.

  2. Broad service temperature range from –65 °C to +200 °C with retained flexibility at low temperatures.

  3. Low compression set performance, ensuring long-term sealing integrity under dynamic and static conditions.

  4. Excellent weathering, ozone, and UV resistance for extended outdoor and aerospace exposure.

  5. Fluorosilicone chemistry provides superior hydrolytic stability compared to standard silicone elastomers.

Typical Applications Of Dow SILASTIC LS-2940 U Fluorosilicone Rubber

  1. Aerospace fuel system seals and gaskets exposed to jet fuels and phosphate ester hydraulic fluids.

  2. Automotive under-hood components requiring resistance to engine oils, coolants, and brake fluids.

  3. Industrial diaphragms and membranes in chemical processing equipment handling corrosive media.

  4. Medical device housings and seals where biocompatibility is not required but solvent resistance is critical.

  5. Military-grade connectors and environmental seals subjected to extreme thermal cycling and fluid immersion.

Specifications Of Dow SILASTIC LS-2940 U Fluorosilicone Rubber

Chemical TypeFluorosilicone elastomer (FVMQ)
Product FormUncured, two-part liquid silicone rubber (Part A + Part B)
AppearanceTranslucent to light amber viscous liquid
Primary ApplicationsStatic and dynamic seals, gaskets, diaphragms, and molded parts
Key FeaturesFuel & solvent resistance, wide temperature capability, low compression set
Cure SystemPt-catalyzed addition cure (hydrosilylation)
Shore A Hardness (Cured)40 ± 3
Specific Gravity (Uncured)1.25–1.30


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