Fluorosilicone, commonly abbreviated as FVMQ, is a high-performance elastomer widely used in sealing applications across industries where resistance to fuel, oil, and chemical exposure is critical. Known for its exceptional thermal stability and chemical resistance, fluorosilicone is ideal for environments requiring reliable performance under extreme temperatures and harsh conditions.

With a chemically stable and inert structure, fluorosilicone resists degradation from exposure to fuels, oils, and environmental factors such as ozone and UV radiation. It maintains flexibility and elasticity across a broad temperature range, making it suitable for demanding applications where standard silicone or other materials may fail.

Fluorosilicone is commonly used in industries such as aerospace, automotive, and chemical processing, where its durability and fuel resistance make it a preferred choice for sealing solutions. For optimal performance, fluorosilicone O-rings and seals can be paired with compatible lubricants when needed to enhance sealing efficiency and reduce friction in specific applications.

Features and Specifications

Temperature Range

Standard fluorosilicone O-ring temperature ranges typically extend from -75°F to 400°F, with some specialized formulations capable of withstanding even higher temperatures. These temperature limits are based on dry air, but actual performance may vary depending on the specific application and environmental conditions.

Durometer

Standard durometer (hardness) for fluorosilicone O-rings typically ranges from 50 Shore A to 80 Shore A, with 70 Shore A being the most common. This range provides versatility, allowing fluorosilicone to be tailored for specific sealing applications by balancing flexibility for sealing performance with hardness for enhanced durability in demanding environments.

Color

Fluorosilicone O-rings are often blue but can also be manufactured in various colors to meet specific application requirements.

Benefits of Fluorosilicone O-rings of Fluorosilicone O-rings

Fluorosilicone O-rings provide exceptional resistance to extreme temperatures, fuel, oil, and chemical exposure, making them ideal for demanding sealing applications in industries such as aerospace, automotive, and chemical processing. Renowned for their durability and reliability, they deliver consistent sealing performance even under harsh conditions. Fluorosilicone O-rings are highly versatile, offering an excellent balance of thermal stability, chemical resistance, and mechanical flexibility, making them a preferred choice for applications requiring robust performance. They provide several beneficial mechanical properties, including:

  • Chemical resistance
  • Flexibility
  • Low electrical conductivity
  • Non-toxic / sterile (medical grade)
  • Resistance to aging and sunlight
  • Temperature resistance
  • Weather and ozone resistance

Additionally, fluorosilicone O-rings are resistant to:

  • Corrosion
  • Electrical
  • Grease 
  • Mold
  • Oxidation
  • Silicone oils
  • Sunlight 
  • Weather

Common Uses and Applications of Fluorosilicone O-rings

Fluorosilicone O-rings are suitable for a wide range of static and dynamic applications, are easy to manufacture even for specialized requirements, and deliver reliable performance in challenging environments. Fluorosilicone O-rings are commonly used in aerospace, automotive, and chemical processing applications, particularly in systems that require resistance to fuels, oils, extreme temperatures, and aggressive chemicals. These O-rings are frequently found in fuel systems, hydraulic equipment, and industrial machinery. Industries that rely on fluorosilicone O-rings include:

The wyatt seal advantage

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