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

Shin-Etsu FE-261-U Fluorosilicone Rubber

Shin-Etsu FE-261-U Fluorosilicone Rubber is a high-performance elastomer combining silicone flexibility with fluorocarbon chemical resistance. Ideal for aerospace, automotive, and semiconductor sealing applications, it offers exceptional stability against fuels, oils, solvents, and extreme temperatures (–60°C to +200°C). Its low compression set and excellent aging resistance ensure long-term reliability in demanding environments.
  • shin etsu fe 261 u fluorosilicone rubber_a1ad3070
  • shin etsu fe 261 u fluorosilicone rubber_a1ad3070

Features Of Shin-Etsu FE-261-U Fluorosilicone Rubber

  1. Excellent resistance to fuels, lubricants, and aggressive hydrocarbon-based fluids.

  2. Broad operating temperature range from –60 °C to +200 °C with retained elasticity.

  3. Superior compression set resistance compared to standard silicone elastomers.

  4. Good electrical insulation properties across wide temperature and frequency ranges.

  5. Low extractables and high purity, suitable for demanding aerospace and medical device applications.

Typical Applications Of Shin-Etsu FE-261-U Fluorosilicone Rubber

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

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

  3. High-reliability seals in semiconductor manufacturing equipment exposed to aggressive process chemicals.

  4. Medical device components where biocompatibility support and fluid resistance are critical.

  5. Oil & gas downhole instrumentation seals subjected to sour gas (H₂S) and high-temperature hydrocarbons.

Specifications Of Shin-Etsu FE-261-U Fluorosilicone Rubber

Chemical TypeFluorosilicone elastomer (FVMQ)
Product FormHigh-consistency gum rubber (uncured compound)
AppearanceOff-white to light amber translucent solid
Primary ApplicationsStatic and dynamic sealing in harsh chemical environments
Key FeaturesFuel/oil resistance, wide thermal stability, low compression set
Processing MethodCompression or transfer molding; requires platinum-catalyzed cure
Shelf Life (Unopened, 25 °C)12 months from date of manufacture
ComplianceMeets ASTM D1418 classification FVMQ; RoHS compliant


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