HIGH VISCOSITY LUBRICANT U4 Resistant O-Rings and Seals

High Viscosity Lubricant U4, also known as polyalphaolefin (PAO) or synthetic oil, is a type of synthetic lubricant primarily used in industrial applications such as manufacturing, automotive, and aerospace. It is commonly used as a base oil in gear oils, hydraulic oils, and engine oils. Common uses for this lubricant include lubrication of bearing surfaces, hydraulic systems, and metalworking processes.

When rubber is exposed to High Viscosity Lubricant U4, it is prone to swelling and softening due to the high viscosity of the lubricant. This can cause the rubber to become brittle, reducing its flexibility and elasticity, and can potentially cause it to crack or tear. Additional risks include leaching of the lubricant into the rubber, which can cause it to become brittle, and may also reduce the overall performance of the rubber seal.


FKM (Viton®)

Viton ® o-rings from Marco Rubber offer excellent compatibility with a range of chemicals, oils and resist high temperatures up to 400F. Viton ® is also known as FKM made of fluoroelastomer one of the most versatile and widely used sealing materials.

Common Names: FKM, FPM (Europe), Fluoropolymer, Fluoroelastomer


Here are just a few of the products we have available. Buy online or submit a quote for a fast response.
Recommended Material:
V1000 FKM
Low Temp
-15 °F (-30 °C)
High Temp
400°F (205 °C)
Base Material
FKM (Viton®)
Hardness
75
Color
Black
Attributes
  • General purpose material
Datasheet
Recommended Material:
V1003 FKM
Low Temp
-15 °F (-30 °C)
High Temp
400°F (205 °C)
Base Material
FKM (Viton®)
Hardness
75
Color
Brown
Attributes
  • General purpose material
Datasheet
Recommended Material:
V1007 FKM
Low Temp
-15 °F (-30 °C)
High Temp
400°F (205 °C)
Base Material
FKM (Viton®)
Hardness
90
Color
Black
Attributes
  • For higher pressure applications
Datasheet

Rubber Material Compatibility with HIGH VISCOSITY LUBRICANT U4

View some of our other material compatibility ratings with HIGH VISCOSITY LUBRICANT U4. If you don't see what you're looking for or need more guidance, our team of experienced sealing design engineers can help select the best sealing products and material for your specific application.

View Full Chemical Compatibility Guide
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