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

Dow SILASTIC LS 5-8761 Fluorosilicone Rubber

Dow SILASTIC LS 5-8761 Fluorosilicone Rubber is a high-performance liquid silicone rubber engineered for extreme temperature and chemical resistance. Featuring excellent fuel, oil, and solvent compatibility alongside broad thermal stability (–60°C to 200°C), it cures rapidly via platinum catalysis. Ideal for aerospace, automotive, and oil/gas sealing applications requiring long-term reliability under harsh conditions.
  • dow silastic ls 5 8761 fluorosilicone rubber_2a8590ba
  • dow silastic ls 5 8761 fluorosilicone rubber_2a8590ba

Features Of Dow SILASTIC LS 5-8761 Fluorosilicone Rubber

  1. Excellent resistance to fuels, oils, and aggressive hydrocarbon-based chemicals across a wide temperature range.

  2. Outstanding low-temperature flexibility down to –60 °C (–76 °F) combined with thermal stability up to 200 °C (392 °F) for short-term exposure.

  3. Superior compression set resistance, maintaining sealing integrity under prolonged static compression.

  4. Good electrical insulation properties and inherent flame retardancy without halogenated additives.

  5. Ready-to-process liquid silicone rubber (LSR) formulation with platinum-cure chemistry for high reproducibility and minimal post-cure requirements.

Typical Applications Of Dow SILASTIC LS 5-8761 Fluorosilicone Rubber

  1. Aerospace fuel system seals and gaskets exposed to jet fuels (e.g., JP-4, JP-8) and synthetic lubricants.

  2. Automotive under-hood sensors and connectors requiring chemical resistance in high-temperature engine environments.

  3. Oil & gas downhole instrumentation seals subjected to sour gas (H₂S), crude oil, and aromatic solvents.

  4. Medical device components requiring biocompatibility support and resistance to cleaning agents and sterilants.

  5. Industrial fluid handling systems including valves, diaphragms, and pump components in aggressive chemical service.

Specifications Of Dow SILASTIC LS 5-8761 Fluorosilicone Rubber

Chemical TypeFluorosilicone elastomer (FVMQ)
Product FormTwo-part liquid silicone rubber (Part A + Part B)
AppearanceTranslucent, viscous liquid (Part A); translucent, low-viscosity liquid (Part B)
Cure SystemPt-catalyzed addition cure
Shore A Hardness (Cured)55 ± 3
Tensile Strength (Cured)7.0–8.5 MPa
Elongation at Break (Cured)120–160%
Primary ApplicationsStatic and dynamic seals, gaskets, and molded components in demanding chemical/thermal environments


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