Fluorocarbon rubber (FKM Viton®)
Fluorocarbon rubber (FKM Viton®) has excellent resistance to high temperatures, ozone, oxygen, mineral oil, synthetic hydraulic fluids, fuels, aromatics, and many organic solvents and chemicals. It has a higher resistance to swell in high octane and oxygenated fuel blends.
Low-temperature resistance is normally not favourable and for static applications is limited, although in certain situations it is suitable down to -40°F (-40°C). Gas permeability is very low and similar to that of butyl rubber. Special fluorocarbon compounds exhibit improved resistance to acids, fuels, water, and steam.
Names:Viton®,Fluorel®
Compound Info | |
| ASTM D1418 Designation | FKM |
| ASTM D2000/SAE J200 Type, Class | HK |
| Hardness (Shore A) | 55-90 |
| Color | black |
Thermal Properties | |
| Standard Min Temp. | -13°F (-25°C) |
| Standard Max Temp. | 446°F (230°C) |
| Special Min Temp. | -40°F (-40°C) |
| Special Max Temp. | 446°F (230°C) |
Chemical Resistance
Mineral oil and grease, low swelling in ASTM oil No. 1, and IRM 902 and IRM 903 oils
Phosphate esters
Non-flammable hydraulic fuels in the group HFDEngine oilsSilicone oil and grease
Mineral/vegetable oil and grease
Aliphatic hydrocarbons (fuel, butane, propane, natural gas)
Aromatic hydrocarbons (benzene, toluene)
Chlorinated hydrocarbons (trichlorethylene and carbon tetrachloride)
Fuels, also fuels with methanol content
NOT Compatible
Glycol based brake fluids, Ammonia gas amines, alkalis, Superheated steam, Low molecular organic acids (fomic and acetic acids)
Disclaimer: These are general guidelines only. All materials should be tested in your application.
VITON O-RING MATERIALS
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Flurocarbon Compound
Available Specifications
Key Characteristics
Avg. Temp Ranges
Datasheet
Commercial
ASTM D2000
Available in black or brown. Excellent resistance to head and a wide range of chemicals.
AMS7276
AMS 7276, M83248/1
Mil-R-83248 CL 1
Dwg AS3208, AS3209
Meets AMS7276. Excellent resistance to heat, engine oils and lubricants, ozone and weathering. Low compression set and good
fuel resistance.
-13° to 392°F
AMS7259
AMS 7259, M83248/2
Mil-R-83248 CL 2
Dwg AS3581
Meets AMS7259. Similar to AMS 7276 above except in 90-durometer hardness.
-13° to 392°F
M83485/1
GLT Type
M84385/1, AMS-R-83485
Mil-R-83485
Meets AMS-R-83485. Excellent heat resistance and low temperature performance.
GLT Type Viton.
-35° to 400°F
GFLT Viton
ASTM D2000 / SAE J200
M7HK 710 A1-10 B38
EF31 Z1 Z2 Z3
GFLT based FKM. Good for low temp with
improved chemical resistance. Listed for
fuel/alcohol applications.
-31° to 392°F
FDA Viton
ASTM D2000 / SAE J200
M2HK 710 A1-10 B37
B38 EF31 F15 Z
FDA, USDA, and NSF grades available.
-4° to 392°F
Viton Extreme (ETP)
Extreme chemical service. Strong bases and amines. Peroxide cured.
-4° to 392°F
Viton V71C
Low Temperature applications. Low compression set with good elongation properties.
-60° to 437°F
Viton V91A
Low Temperature applications. Explosive decompression resistant.
-51° to 437°F
VITON GASKET MATERIALS
VITON ® A GASKET MATERIAL
Viton A – General Properties
Offers a broad range of resistance to oils, fuels, lubricants and most mineral oils. Very good resistance to many aliphatic hydrocarbon fluids that act as solvents for many other rubbers. Exceptionally good resistance even at temperatures that can stiffen other non-fluorinated elastomers. Viton® A is resistant to atmospheric oxidation, sun, weather, and has excellent resistance to fungus and mold.
Available Compounds:
- Viton® A offers good fluid resistance at a very affordable price.
- Viton® GLT Peroxide curable offering low-temperature flexibility -40°C (-40°F).
Chemical Resistance
GOOD
66% Flourine
VITON ® B GASKET MATERIAL
Viton B – General Properties
Viton® B has better resistance and retains flexibility better after dry heat aging than Viton® A. It is recommended with good mechanical properties. Viton® B is specified by the Fluid Sealing Association to resist sulfur dioxide in power generating factory systems. Viton® B offers superior resistance to both diluted and concentrated aggressive acids, and various mineral acids including: Sulfuric Acid, Nitric Acid, and Hydrochloric Acid.
Available Compounds:
- Viton® B offers better overall fluid resistance than Viton A, with economical pricing.
- Viton® GB Peroxide curable offering better a compression set.
- Viton® GBLT Peroxide curable offering low temperature flexibility -40°C (-40°F).
Chemical Resistance
BETTER
68% Flourine
VITON ® F GASKET MATERIAL
Viton F – General Properties
The “F” family of Viton® was designed for today’s oxyengated fuels, modern lubricants, and blended chemicals. As new chemicals and fuels are developed, new technology in Viton has led to the development of the Viton® F family of sealing products. Viton® F offers excellent resistance to fluids that Viton® A and B types cannot adequately resist. Viton® F types are highly resistant to oxygenated fuels containing (MeOH, EtOH, MTBE), engine lubricants (SE-SF and SG-SH grades), aromatic hydrocarbon process fluids, chemicals and conentrated mineral acids.
Available Compounds:
- Viton® B (with Bisphenol cure). Viton® F offers the best fluid resistance at a very affordable price.
- Viton® GF Peroxide curable offering resistance to Aqueous Fluids: Water, Steam and Mineral Acids. (H2SO4, HNO3, HCL, etc.)
- Viton® GFLT Peroxide Curable offering exceptional chemical resistance and maintains flexibility in low temperature applications -40°C (-40°F).
Chemical Resistance
BEST
70% Flourine
VITON ® GASKET MATERIAL EXTREME
General Properties
Viton ® Extreme offers more universal chemical resistance than either standard grades of Viton ® or TFE/P (Aflas) Elastomers. Viton ® Extreme was originally develolped to resist Sour (H2S) petroleum environments that are commonly found in the oil field. However, it has become widely used in the Chemical Processing, Pertoleum Refining, Semiconductor and Chemical Transportation industry.
Today’s blended fuels with additives and oxygenates such as MTBE, TAME, ETBE and alcohols offer difficult sealing solutions that Viton® Extreme can solve without the cost of high performance perfluoroelastomers (Kalrez).
Available Compounds:
- Viton ® ETP Cost-effective replacement for perfluoroelastomers like Kalrez, Chemraz, and Simriz
SUPERIOR RESISTANT VITON SPONGE RUBBER SHEETS
Viton ® Sponge resists the corrosive attack of a wide variety of chemicals and fluids. It delivers superior protection against oils, fuels, lubricants, most mineral acids, and fire-resistant hydraulic fluids. It performs well in many aliphatic and aromatic hydrocarbons (carbon tetrachloride, benzene, toluene, xylene) that act as degrading solvents for other rubbers.
Available thicknesses:
1/8” 1/4” 3/8” 1/2”
Viton ® Sponge plays a particularly vital role in cases where soft flouroelastomers are desirable. The practical low hardness limit for solid Viton ® is 55 durometer. Viton ® Sponge fills this void where softer material is required, yet the heat and fluid resistance of solid Viton ® is necessary.
Additional advantages of Viton ® Sponge over conventional elastomeric sponges include: low temperature flexibility, high resistance to ozone attack, and low moisture absorption.
The operational temperature range of Viton® Sponge is -10°F to +400°F. At high temperatures, Viton ® Sponge resists heat and simultaneously retains its good mechanical properties.
Download the Viton® Sponge Rubber Sheet Datasheet as PDF
VITON® DIAPHRAGM SHEET
Viton Diaphragm sheet is manufactured with high quality Viton rubber compounds designed for long service. This fluorocarbon rubber sheet is reinforced with Nylon, Nomex, or Fiberglass fabric to provide strength.
Recommended use for control valves, regulators, pumps etc. Typically available in one ply of fabric, multiple plies can be used for high pressures, and more demanding applications.
