FC 75 Resistant O-Rings and Seals

FC 75 is a polyurethane-based foam insulation material. It is also known as polyurethane foam, polyurethane insulation, and polyurethane foam insulation. It is commonly used in the construction and automotive industries for insulation and soundproofing. When exposed to FC 75, rubber can suffer from cracking, delamination, and hardening. These failures can occur due to the foam’s chemical makeup, which can react with the rubber material. The foam’s high viscosity can also cause rubber to become brittle and can impede the rubber’s ability to flex and move.


Buna-N (NBR, Nitrile, Buna)

Buna-N o-rings also referred to as NBR o-rings and Nitrile o-rings are the most widely used o-ring material in the word because of low cost, good mechanical performance with resistance to water, most basic oils, lubricants and some fuels, many pneumatic, hydraulic systems, and the default choice for basic applications. Buna-N o-rings are not recommended for exposure to sunlight, UV light, ozone and general outdoor weathering or hash chemicals, acids, keytones and many others.

Common Names: Buna-N, Nitrile, NBR, Acrylonitrile Butadiene Rubber


Here are just a few of the products we have available. Buy online or submit a quote for a fast response.
Recommended Material:
B1000 Buna-N
Low Temp
-30 °F (-35 °C)
High Temp
250°F (125 °C)
Base Material
Buna-N (NBR, Nitrile, Buna)
Hardness
70
Color
Black
Attributes
  • General purpose material
Datasheet
Recommended Material:
B1001 Buna-N
Low Temp
-30 °F (-35 °C)
High Temp
250°F (125 °C)
Base Material
Buna-N (NBR, Nitrile, Buna)
Hardness
90
Color
Black
Attributes
  • For higher pressure applications
Datasheet
Recommended Material:
M1004 Buna-N
Low Temp
-65 °F (-55 °C)
High Temp
275°F (135 °C)
Base Material
Buna-N (NBR, Nitrile, Buna)
Hardness
90
Color
Black
Attributes
  • Listed on the Qualified Products List (QPL)
  • For higher pressure applications
Datasheet

Rubber Material Compatibility with FC 75

View some of our other material compatibility ratings with FC 75. 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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