SKYDROL 500 B4 Resistant O-Rings and Seals

Skydrol 500 B4, also known as phosphoric acid ester, is a flame-resistant hydraulic fluid used primarily in aircrafts. It is highly resistant to fire and flash fire, and is very stable even when exposed to high temperatures. Common industries that use Skydrol 500 B4 include aerospace, defense, and military applications.

When rubber is exposed to Skydrol 500 B4, some of the common failures that may occur include swelling, cracking, and hardening of the rubber material. Swelling can occur when the rubber material absorbs the Skydrol 500 B4, causing it to expand and become distorted. Cracking can also occur as the rubber material becomes brittle and can no longer withstand the pressure of the Skydrol 500 B4. Lastly, hardening can occur as the rubber material becomes more rigid and loses its elasticity.


EPDM (EP, EPR, Ethylene-Propylene Rubber)

EPDM o-rings, or ethylene propylene o-rings, are a family of synthetic elastomers with lower cost steam and chemical resistance, particularly for applications involving solvents, acids and other mild chemicals. Marco Rubber has the world’s largest inventory network of EPDM o-rings and made on demand custom manufacturing often without tooling fees, so the EPDM o-rings you need are always available. Whether it’s for water systems, braking systems, medical, pharmaceutical, food or dairy use, you can count on Marco Rubber to deliver your o-rings fast and efficiently.

Common Names: EPDM, Ethylene Propylene Diene Monomer Rubber


Here are just a few of the products we have available. Buy online or submit a quote for a fast response.
Recommended Material:
E1055 EPDM
Low Temp
-65 °F (-55 °C)
High Temp
300°F (150 °C)
Base Material
EPDM (EP, EPR, Ethylene-Propylene Rubber)
Hardness
70
Color
Black
Attributes
  • Peroxide cured
Datasheet
Recommended Material:
E1000 EPDM
Low Temp
-65 °F (-55 °C)
High Temp
300°F (150 °C)
Base Material
EPDM (EP, EPR, Ethylene-Propylene Rubber)
Hardness
70
Color
Black
Attributes
  • Compliant to FDA specification 21 CFR 177.2600 for use in food and beverage contact applications
  • Certified to NSF 61 specification for use in drinking water applications
  • Peroxide cured
Datasheet
Recommended Material:
E1006 EPDM
Low Temp
-45 °F (-45 °C)
High Temp
300°F (150 °C)
Base Material
EPDM (EP, EPR, Ethylene-Propylene Rubber)
Hardness
50
Color
Black
Attributes
  • Low durometer material
  • Peroxide cured
Datasheet

Rubber Material Compatibility with SKYDROL 500 B4

View some of our other material compatibility ratings with SKYDROL 500 B4. 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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