Acid Resistant Metric Brown O-Ring Viton For Aircraft Engines Seals Systems

Acid Resistant ?Metric Brown O-Ring Viton For Aircraft Engines Seals Systems
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VITON O-RINGS:
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Viton? (fluorocarbon rubber) has excellent resistance to high temperatures, ozone, oxygen, mineral oil, synthetic hydraulic fluids, fuels, aromatics and many organic solvents and chemicals making it a good choice for an o-ring material.
Low temperature resistance is normally not favorable and for static applications is limited to approximately -15 °F (-26 °C) although in certain situations it is suitable down to -40 °F (-40 °C) Under dynamic conditions, the lowest service temperature is between 5 °F and 0 °F (-15 °C and -18 °C).
Gas permeability is very low and similar to that of butyl rubber. Special fluorocarbon compounds exhibit an improved resistance to acids, fuels, water and steam.?
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ASTM D1418 Designation:?FKM
ASTM D2000/SAE Type, Class:?HK
ORK Compound Designation:?VT
Standard Color:?Black
Description:?Combining high temperature resistance with outstanding chemical resistance, Fluorocarbon-based compounds approach the ideal for a universal O-ring material.
Key Use(s):?Seals for aircraft engines. Seals for automotive fuel handling systems. High temperature/low compression set applications. Wide chemical exposure situations. Hard vacuum service.
Temperature Range
Standard Compound: -13° to +446°F
Special Compound: -40° to +446°F
Hardness (Shore A):?55 to 90.
Features:High fluorine grades offer higher resistance to swell in high octane and oxygenated fuel blends. This give superior performance in Ethanol/Methanol blended gasoline. Base resistant grades offer improved resistance to amine based oil protectants found in new transmission oils.? Also, improved resistant to steam for higher temperature services. Low temperature bases can improve performance to -40°F.
New Polymers being offered have improved chemical resistance and low temperature performance.
Viton??Extreme??ETP offers similar chemical compatibility as Kalrez??with temperature performance with a TR(10) of -40°F and brittleness to -76°.
Limitations:?Fluorocarbons (Viton?s) are not recommended for exposure to ketones, amines, low molecular weight esters and ethers, nitro hydrocarbons, hot hydrofluoric or chlorosulfonic acids, or Skydrol??fluids. They are also not recommended for situations requiring good low temperature flexibility.

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