Is EPDM the same as FKM?

Is EPDM the same as FKM?

While NBR and FKM have similar chemical resistance, EPDM is completely different. It is incompatible with petroleum (oil and gasoline), but it is compatible with alcohols (ethanol, methanol, and nitromethane), water, coolants (both ethylene and propylene glycol), and glycol-based brake fluid.

Is FKM a rubber?

FKM or fluorocarbon rubber is used throughout many different industries. These rubber compounds give exceptional heat resistance with compatibility across many fluids or chemical exposures.

Is FKM plastic or rubber?

FKM rubber belongs to the thermoset elastomers (rubber) classification, while silicone plastic belongs to the thermoset plastics. There are 5 material properties with values for both materials.

What does FKM material mean?

Fluro-Elastomer
FKM is the American standard ASTM short form name for Fluro-Elastomer. It is the designation for around 80% of Fluoro-Elastomers defined by ASTM D1418.

Is EPDM a fluoroelastomer?

Both are types of rubber polymers that are compounded for low compression set. Viton® rubber is a fluoro elastomer, whereas epdm rubber is ethylene-propylene-diene-monomer. The primary differences between Viton® and EPDM is in their chemical resistance and temperature ranges.

What is EPDM O-rings?

EPDM o-rings have gained wide seal industry acceptance for its excellent ozone and chemical resistance properties and is compatible with many polar fluids that adversely affect other elastomers. The EPDM o-ring is commonly referred to as a ethylene-propylene o-ring or EP o-rings.

Is Viton plastic or rubber?

What is Viton®? Viton® is a brand name of DuPont for its synthetic rubber and fluoropolymer elastomer, commonly used in O-rings and other moulded or extruded products.

What Viton 90?

VITON® 90 O-Rings BS425 to BS475 Cross Section 6.99mm Fluorocarbon elastomers are highly fluorinated carbon-based polymers used in applications to resist harsh chemical and ozone attack. Viton® BS O-rings are suitable for high vacuum applications.

Is PTFE rubber or plastic?

Fluoroelastomer (FKM) rubber is a thermoset elastomer while Polytetrafluoroethylene (PTFE) is a thermoplastic. Both are fluorinated materials comprising of carbon atoms surrounded by fluorine atoms, which gives them incredible chemical resistance.

What is FKM used for?

Today, FKM materials are commonly used to manufacture o-rings, seals, and gaskets for a variety of high-performance applications in the automotive, aerospace, energy, semiconductor, and industrial industries.

What’s the difference between EPDM rubber and FKM rubber?

Both EPDM rubber and FKM rubber are thermoset elastomers (rubber). There are 7 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown. For each property being compared, the top bar is EPDM rubber and the bottom bar is FKM rubber.

Which is better for molten alkali metals EPDM or FKM?

With an operating temperature as low as -50 °C (with highs of +150 °C), EPDM is a solid choice in sub-zero temperatures. EPDM compresses well and is highly resistant to tears, abrasion and steam. FKM: FKM is known to swell in fluorinated solvents and cannot be used with molten or gaseous alkali metals.

Which is a better seal material, EPDM or NBR?

Its high 400F operating temperature makes FKM a better choice for sealing engine, transmission, and differential oil systems. While NBR and FKM have similar chemical resistance, EPDM is completely different.

Which is better EPDM or O ring material?

EPDM: For a low-cost sealing material that performs well in outdoor applications, EPDM is a good choice. This durable synthetic rubber won’t degrade under UV conditions and will tolerate prolonged contact with steam and some acids. Choosing the wrong ‘O’ ring material can lead to rapid failure, which is why you should always seek expert advice.