O-Ring 109mm x 6.99mm FEP Encapsulated Silicone Red -60°C to +204°C FDA USP Class VI 3-A

FEP Encapsulated Silicone is a high-performance sealing material that combines the excellent elasticity and temperature stability of silicone with the chemical resistance and inertness of FEP (Fluorinated Ethylene Propylene). This unique combination makes it ideal for applications that require exceptional sealing performance in extreme environments because the elastomer core assists with the slow recovery of the FEP jacket. FEP encapsulation enhances silicone's properties, offering improved chemical resistance, high-temperature stability, and long-term durability, while maintaining the flexibility and low compression set characteristics that silicone is known for.

Dimensions:

109mm ID x 6.99mm CS
ID Tolerance: ±0.88mm
CS Tolerance: ±0.15mm

Material Properties:

Hardness:
Colour: Red
Temperature Range: -60°C to +204°C

Approvals:

FDA 
USP Class VI 
3-A

Features:

3-A 
FDA

Key Benefits of FEP Encapsulated Silicone O-Rings:

Superior Chemical Resistance
Excellent Temperature Stability
Flexibility and Resilience
FDA Compliance and Non-Toxicity
Outstanding Electrical Insulation Properties
High Purity
Durability and Long Service Life
Low Friction and Smooth Surface
UV, Ozone, and Weather Resistance
Improved Sealing Performance

Chemical Resistance:

Excellent resistance to oils, fuels, and a variety of hydrocarbons.
Strong resistance to acids, alkalis, and many industrial chemicals.
Offers superior sealing performance in applications involving lubricants and automotive fluids.

Not Compatible With:

Molten alkali metals: Sodium, potassium, and lithium in their molten state can react with FEP.
Fluorine: Elemental fluorine and fluorine-based compounds like chlorine trifluoride are highly reactive and can attack FEP.
Strong oxidizing agents: While FEP is generally resistant to most oxidizing agents, extremely strong oxidizing agents like concentrated hydrogen peroxide (90%) can degrade it over time, especially at elevated temperatures.

Key Applications:

Pharmaceutical and Food Processing
Chemical Processing
Semiconductor Manufacturing
Medical Devices
Automotive Industry
Oil and Gas
Marine