MIL0P027402 Resistant O-Rings and Seals

MIL-PRF-027402 is a silicone-based sealant commonly known as MIL-PRF-27402. This sealant is often used in military-grade applications such as sealing aircraft and vehicle components. It is also used for sealing joints in structures, and is an excellent choice for applications that require flexibility and chemical resistance.

When exposed to MIL-PRF-027402, rubber materials may suffer from swelling, cracking, brittleness, and loss of mechanical properties. Swelling occurs when the rubber absorbs too much of the sealant, causing it to expand and become soft. Cracking is caused by the sealant penetrating the rubber, and can cause the rubber to crack or break. Brittleness is caused when the rubber becomes hard and brittle due to the sealant penetrating it. Additionally, the mechanical properties of the rubber may be decreased due to the swelling and cracking that can occur when exposed to the sealant.


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 MIL0P027402

View some of our other material compatibility ratings with MIL0P027402. 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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