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

DOW SILASTIC EFX40MLC00 Fluorosilicone Compound

DOW SILASTIC EFX40MLC00 is a fluorosilicone compound offering exceptional resistance to fuels, oils, and extreme temperatures. Part of Dow’s high-performance SILASTIC™ elastomer series, it combines silicone flexibility with fluorocarbon chemical resilience. Ideal for aerospace, automotive, and energy sealing applications requiring long-term reliability under harsh conditions.
  • dow silastic efx40mlc00 fluorosilicone compound_95d3766b
  • dow silastic efx40mlc00 fluorosilicone compound_95d3766b

Features Of DOW SILASTIC EFX40MLC00 Fluorosilicone Compound

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

  2. Broad operating temperature range from –65 °C to +200 °C (–85 °F to +392 °F) with retained elastomeric properties.

  3. Excellent compression set resistance, ensuring long-term sealing performance in dynamic and static applications.

  4. Good low-temperature flexibility combined with inherent fluorosilicone chemical stability.

  5. Ready-to-mold high-consistency rubber (HCR) formulation with consistent batch-to-batch reproducibility.

Typical Applications Of DOW SILASTIC EFX40MLC00 Fluorosilicone Compound

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

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

  3. Oil & gas downhole instrumentation seals subjected to sour gas, condensates, and high-pressure hydrocarbons.

  4. Military-grade connectors and enclosures demanding MIL-DTL-25988 compliance and extreme environmental resilience.

  5. Industrial fluid-handling systems where silicone’s thermal stability must be paired with fluorocarbon-level chemical resistance.

Specifications Of DOW SILASTIC EFX40MLC00 Fluorosilicone Compound

Chemical TypeFluorosilicone Elastomer (FVMQ)
Product FormHigh-Consistency Rubber (HCR), uncured compound
AppearanceUniform, homogeneous, off-white to light tan gum stock
Primary ApplicationsStatic and dynamic seals, gaskets, O-rings, and molded parts for harsh chemical environments
Key FeaturesFuel/oil resistance, low-temperature flexibility, thermal stability, compression set resistance
Processing MethodCompression molding, transfer molding, or injection molding (after appropriate pre-forming)
Cure SystemPeroxide-curable (requires post-cure for optimal property development)
Regulatory ComplianceMeets ASTM D1418 classification FVMQ; compliant with AMS 3325D requirements


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