Fluorosilicone O-Rings Washers Gaskets Seals

Fluorosilicone O-Rings
Fluorosilicone O-Rings

Fluorosilicone Rubber Description :

Fluorosilicone rubber is a widely used elastomer that can be compounded to meet a wide range of applications.  The mechanical and physical properties are very similar to silicone rubber. However, fluorosilicone offers improved fuels and mineral oil resistance but poor hot air resistance when compared with silicone. This material is widely used in semiconductor Ashing equipment for its resistance to oxygen plasma.

Recommended Use Not Recommended For Mechanical Properties
Jet Fuel
Dry Heat
Wide Temperature Range
Some Petroleum Oils
Chlorinated Solvents
Ketones (MEK)
Phosphate Esters
Some Acids
Auto / Aircraft Brake Fluids
Amines (Ammonia)
Poor Wear Resistance
Moderate Comp. Set Resistance
Moderate Short-Term Resilience
Poor Permeation Resistance

Popular Fluorosilicone Compounds:

Hundreds more specialty compounds available. Contact a Marco Sales Consultant or Engineer for more information.

Marco CPD# Color Duro (Shore A) Relative Price Typical Inventory Level High Temp (F) Low Temp (F) Steam < 300 F Steam < 400 F Compression Set Chemical & Solvents Sunliight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor
Datasheet F1001
Blue 70 O-ring Material Price 4 High 350 -80 4 4 2 3 1 4 3 3 1 4
Aerospace Military Specification Mil-Spec AMS-R-25988 M25988/1-### per Mil-R-25988 CL-1 GR-70, jet fuel resistance
Datasheet F1002
Blue 75 O-ring Material Price 5 Low 350 -80 4 4 2 3 1 4 3 3 1 4
Aerospace Military Specification Mil-Spec AMS-R-25988 M25988/2, jet fuel resistance
Datasheet F1003
Blue 60 O-ring Material Price 5 Low 350 -80 4 4 2 3 1 4 3 3 1 4
Aerospace Military Specification Mil-Spec AMS-R-25988 M25988/3, jet fuel resistance
Datasheet F1006
Blue 40 O-ring Material Price 5 Low 350 -80 4 4 2 3 1 4 3 3 1 4
Jet fuel resistance

Common Names:

Fluorosilicone, FVMQ

Fluorosilicone Trade Names:

Silastic® LS,   FSE

Fluorosilicone Temperature Range:

The temperature ranges presented above are approximations for dry air service only and should not be used to determine design specifications or end-use temperature limits. Actual temperature range of a compound in an end-use application is highly dependent on part type, hardware configuration, applied forces, chemical media, pressure and thermal cycling effects, and other factors. The most practical way of determining an end-use temperature range is testing in the actual application conditions. Consult a Marco Engineer for more details.

Fluorosilicone Features and Resistances :

Fluorosilicone Limitations :

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Existing Customer Specialist: 800-775-6525 or repeat customers

Marco Rubber & Plastics
PO Box 1150
Seabrook, NH 03874

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