Is Viton suitable for steam?
FKM Viton Brown & Black Rubber is resistant to water, steam, oxygen, ozone, mineral, animal and vegetable oils and greases, diesel oil, petroleum based hydraulic fluids, aliphatic, aromatic fuels and methanol fuel.
What is Viton used for?
An exceptionally broad range of chemical resistances make Viton seals a perfect option for most applications involving oils, fuels, and mineral acids, and these seals also boast excellent resistances to oxidation, ozone, UV exposure, weather, fungus, and mold.
Why is Viton so expensive?
A Viton™ o ring will tend to be significantly more expensive than the equivalent nitrile component. This is because it simply does the job where other products cannot.
Is FKM good for steam?
FKM is the wrong choice for steam. In the 1970’s, Seals Eastern evaluated the aging of a high fluorine content, low VF2 containing grade of FKM class fluoroelastomer in steam. Temperatures and time frames exceeding the capability of EPDM were studied.
Are Viton seals fuel resistant?
Viton offers universal chemical resistance for sealing applications for oils, fuels, and mineral acids. Its weatherability and resistance to mold and fungus, oxidation, ozone, and UV exposure offer additional excellent properties.
What is the difference between Viton and Buna O rings?
Viton is the choice over Buna for high-temperature applications. Viton seals hold indefinitely at temperatures up to 400°F and can last up to 48 hours at temperatures up to 600°F. Buna is effective to 250°F. Viton offers universal chemical resistance for sealing applications for oils, fuels, and mineral acids.
Are Viton O-rings better?
Crucial Differences While both materials are suitable for moderate temperature applications, Viton® is the superior choice for high temperatures. Viton® standard compounds can withstand temperatures up to 446℉, while Buna o-rings can only handle up to 257℉.
Is Viton the same as Teflon?
Viton vs Teflon (PTFE) – Viton offers a greater temperature resistance but falls short of Teflons(PTFE) chemical resistance. Also, Teflon is slightly less thermally resistant but offers much more in the way of non-adhesive properties.
How does Viton work in hot water and steam?
– “Usual” (cheaper) FKM (Viton is brand name of one of the 4 big producers) is cured by bisphenols and has calcium hydroxide and magnesium oxide as acid acceptors. This type of polymer is affected (typically softening)by hot water and steam (not very easy, it takes high temperatures and somewhat longer times !)
What’s the best temperature to use Viton in?
Viton is generally serviceable in dynamic applications to temperatures of -18 to -23 °C. Special formulations permit its use in static applications down to -54°C. Also, Viton has proven to be satisfactory for static seals used under conditions approaching absolute zero.
Can you use Viton in a butterfly valve?
Viton is often used as elastomeric seat in butterfly valves. Viton is know to be restistant to ‘difficult’ chemical media. However, in many chemical resistance lists the use of Viton is not recommended for hot water applications or steam service.
What kind of chemicals can you put in Viton?
A trademark of DuPont, Viton fluoroelastomer in general has a high temperature tolerance and chemical resistance rating. It is a synthetic rubber that resists many hydrocarbons, biodiesel, and petro chemicals, but is NOT compatible with ketones.