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. FKM is a premium product, due to its chemical makeup.
What is 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.
What is the difference between FPM and FKM?
FPM is the international designation to ISO – whereas FKM is the ASTM abbreviation. Both of these designations stand for the same base material : Fluoro Rubber.
Should I use EPDM or FKM in my hydraulic oil?
(Of course there have to be exceptions -- the Citroen and Rolls-Royce high-pressure brake/suspension systems that use green hydraulic oil must avoid EPDM and should use FKM instead.) So, what is the best choice where?
What is FkM and why is it so expensive?
FKM: FKM is known to swell in fluorinated solvents and cannot be used with molten or gaseous alkali metals. FKM is a premium product, due to its chemical makeup. So it does come with a higher price tag than other non-fluorinated hydrocarbons and low temperature grades can be especially costly.
Is FKM plastic or rubber?
Unsourced material may be challenged and removed. FKM is a family of fluorocarbon-based fluoroelastomer materials defined by ASTM International standard D1418, and ISO standard 1629. It is commonly called fluorine rubber or fluoro-rubber. All FKMs contain vinylidene fluoride as a monomer.
Are Viton and EPDM the same?
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. Both have different properties and applications for general industrial use.
What does FKM stand for material?
Fluro-ElastomerFKM 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 FKM rubber good?
FKM is of high value in use as a class of synthetic rubber which provides extraordinary levels of resistance to chemicals, oil and heat. This type of rubber can be fabricated into seals, o-rings, and hoses for a variety of high performance applications in the automotive, aerospace, and petrochemical industries.
Is FKM same as Viton?
These rubber compounds give exceptional heat resistance with compatibility across many fluids or chemical exposures. The most commonly known name for these compounds is “Viton,”™ which has become the generic name for all FKM polymers and rubber compounds.
What is the difference between FKM and FPM?
So what's the difference between FPM and FKM? FPM is the international designation to ISO – whereas FKM is the ASTM abbreviation. Both of these designations stand for the same base material : Fluoro Rubber.
Is FKM rubber soft?
For those who don't know, FKM stands for Fluoroelastomer, which is a class of man-made rubber of great density but soft in touch, made to stand harsh conditions, such as high temperature, chemicals etc.
Is FKM a silicone?
TYM Seals & Gaskets TYM has nearly 40 years experience in supplying and manufacturing gaskets and seals made from silicone, FKM fluoroelastomer, neoprene, nitrile and more.
Is FKM an FPM?
The terms FKM, FPM and Viton® are all different designations that stand for the same base material, which is fluoro rubber. FKM is the abbreviation according to the ASTM, FPM is the short form for the fluoroelastomer category according to DIN/ISO and Viton® is the registered trademark of DuPont Performance Elastomers.
Is FKM the same as PTFE?
FKM offers greater temperature resistance but falls short of PTFE's properties in terms of chemical resistance. While PTFE is slightly less thermally resistant but offers much in the way of non-adhesive properties.
Is FKM vulcanized rubber?
Simply put, vulcanised rubber means that it has been cured to make it both strong and flexible. In chemistry, FKM refers to a material with high chemical and thermal resistance. In other words, these are the characteristics of FKM vulcanised rubber: Robustness (tear and tensile strength)
What is FKM full form?
Properties. Fluoroelastomers or Fluorocarbons (FKM), also known as Viton®, are highly fluorinated polymers that are suitable for continuous use at elevated temperatures. Various grades are available, including copolymer and terpolymers.
What is the difference between EPDM and FKM?
FKM and EPDM are common ‘O’ ring materials that offer excellent thermal and oxidation resistance. However, there are some significant differences between these two polymer materials, which, depending on your application, can make or break your choice of ‘O’ ring material. Here, TRP Polymer Solutions talks us through the various advantages and disadvantages of FKM and EPDM.
What is the advantage of FKM?
FKM: Fluoroelastomers (FKM) are characterised by their strong carbon-fluorine bonds, which give them the advantage of exceptional chemical, thermal and oxidation resistant properties. FKM also offers a wide operational temperature range of -45 °C to +204 °C, has good mechanical properties, and its density gives a high-quality feel.
What temperature can EPDM rubber withstand?
Few rubbers can withstand extremely cold temperatures like EPDM. 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.
What is FKM in the oil industry?
FKM: FKM is suitable for explosive decompression, CIP, SIP and FDA applications. It is ideal for the handling and transportation of chemicals and fuels, as well as high temperature and explosive environments, such as in the oil and gas, automotive and aerospace industries.
Is FKM a solvent?
FKM: FKM is known to swell in fluorinated solvents and cannot be used with molten or gaseous alkali metals. FKM is a premium product, due to its chemical makeup. So it does come with a higher price tag than other non-fluorinated hydrocarbons and low temperature grades can be especially costly.
Is EPDM good for outdoor use?
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.
Is EPDM a good solvent?
EPDM: Although EPDM offers good resistance to dilute acids, ketones and alkalis, it does not fare so well fuels, oils and non-polar solvents. It certainly wouldn’t be a suitable choice for petro-chemical applications.
What type of brake fluid is used for EPDM?
Of these three rubber types, EPDM is the only choice for seals in braking systems using a glycol-based or silicone-based DOT -approved or pure racing brake fluid. (If you buy your brake fluid from Pegasus Auto Racing Supplies, use EPDM seals in that system.) Don't panic, most companies that make master cylinder and caliper seals only offer them in ...
What coolant is compatible with EPDM?
All three rubber types are compatible with water and ethylene glycol coolant. All three will handle 212F and are acceptable to 250F in static applications. If you are running propylene glycol coolant, then EPDM is the best choice.
What type of rubber should I use for a braking system?
Of all three rubber types, EPDM is the only one that should be considered for use anywhere in a braking system. (Of course there have to be exceptions -- the Citroen and Rolls-Royce high-pressure brake/suspension systems that use green hydraulic oil must avoid EPDM and should use FKM instead.)
Is FKM better than NBR?
FKM is also fully compatible with water and ethylene glycol coolants. Most FKM grades are also a little better than NBR at handling biodiesel and ethanol-blended fuels, although FKM is still not the best choice for ethanol -- and it is a downright poor choice for nitromethane. Its high 400F operating temperature makes FKM a better choice ...
Is EPDM compatible with gasoline?
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. Of all three rubber types, EPDM is the only one that should be considered for use anywhere in a braking system.
Is master cylinder caliper EPDM?
Don't panic, most companies that make master cylinder and caliper seals only offer them in an EPDM version. If a seal is made for automotive brake systems and the material is not specified, you can safely assume it is EPDM.
Can you use NBR seals on a non-return fuel system?
Fuel systems. If you are running pure gasoline or petroleum diesel in a non-return fuel system, NBR seals will be perfectly acceptable. But change the fuel to an ethanol blend or biodiesel and you should be looking at FKM. If you have a recircualting system (i.e., return line to the fuel tank), FKM seals will generally be more resistant to ...
What is EPDM in brakes?
ETHYLENE-PROPYLENE (EPDM) Ethylene-propylene compounds are used frequently to seal in brake systems, and for sealing hot water and steam. Ethylene propylene compounds have good resistance to mild acids, detergents, alkalis, silicone oils and greases, ketones, and alcohols. They are not recommended for applications with petroleum oils, mineral oil, ...
What is fluorosilicone rubber?
Fluorosilicone rubber which combines the good high and low temperature stability of Silicone with the fuel oil and solvent resistance of Fluorocarbons. It is most often used in aerospace applications for systems requiring fuel and/or diester-based lubricant resistance up to a dry heat limit of 400° F.
Is fluorocarbon a good elastomer?
An excellent elastomer for use in high temperature applications. Also exhibits excellent chemical resistance, commonly referred as FKM or FKM. Fluorocarbon exhibits resistance to a broader range of chemicals combined with very good high temperature properties more so than any of the other elastomers.
