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FKM (Viton®) vs Fluorosilicone for O-Rings and Seals

FKM (Viton®)

Fluorosilicone (FVMQ, FSIL)

Description
 Both materials are well suited for use in the -30 to 180°C range. Fluorosilicone has an advantage in lower temperatures and FKM has an advantage in higher temperatures. Marco offers specific compound formulations extending these ranges even futher as can be seen in the following compound comparison chart. When comparing these materials with respect to electrical current resistance, Fluorosilicone has a slight advantage. The differences in compression set resistence show that FKM has a significant advantage. Additionally, FKM has a significant advantage when considering wear resistance. Also, both materials are equally poor when comparing heat stability. Furthermore, both materials are equally Fair when comparing short term resilience. Finally, FKM has a significant advantage when evaluating differences in permeation resilience. Both materials are resistant to ozone, compression set, common fuels, vegetable oils, aromatic hydrocarbons, chlorinated hydrocarbons, aging and silicone oils, with FKM having specific resistences to steam, solvents, broad spectrum chemical resistance, mineral oils, greases, aliphatic hydrocarbons, non-flammable hydraulic fluids, strong acids, petroleum oils, brake fluids, acetone, halogenated hydrocarbons, di-ester lubricants, vacuum and most acids. Fluorosilicone has specific resistence to weathering and sunlight, oxidizing chemicals, animal oils, chlorinated solvents, diluted alkalies, diester oils, aliphatic fluorocarbons, aromatic fluorocarbons, toluene, benzene, jet fuels, phosphate esters, dry heat, wide temperature range, ammonia, some acids and some petroleum oils.
Compounds
Marco
Compound
Number		DatasheetHardness
(Shore A)		ColorLow TempHigh TempFeatures
Compound: F1001Datasheet: View DatasheetHardness: 70Color: BlueLow Temp:
-100 °F
(-75 °C)
High Temp:
350 °F
(180 °C)
Description: Aerospace Military Specification Mil-Spec AMS-R-25988 M25988/1-### per Mil-R-25988 CL-1 GR-70, jet fuel resistance
Compound: F1002Datasheet: View DatasheetHardness: 75Color: BlueLow Temp:
-80 °F
(-65 °C)
High Temp:
350 °F
(180 °C)
Description: Aerospace Military Specification Mil-Spec AMS-R-25988 M25988/2, jet fuel resistance
Compound: F1003Datasheet: View DatasheetHardness: 60Color: BlueLow Temp:
-100 °F
(-75 °C)
High Temp:
350 °F
(180 °C)
Description: Aerospace Military Specification Mil-Spec AMS-R-25988 M25988/3, jet fuel resistance
Compound: F1006Datasheet: View DatasheetHardness: 40Color: BlueLow Temp:
-100 °F
(-75 °C)
High Temp:
350 °F
(180 °C)
Description: Jet fuel resistance
Compound: V1000Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: General purpose, low cost & high inventory FKM
Compound: V1002Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: AMS-R-83248 M83248/1-### PER MIL-R-83248 TY-1 CL-1, available in a UL recognized grade, compare to Parker V0747-75
Compound: V1003Datasheet: View DatasheetHardness: 75Color: BrownLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: Brown FKM Viton, improved oxidation resistance, compare to Parker V884-75
Compound: V1004Datasheet: View DatasheetHardness: 90Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: M83248/2-### PER MIL-R-83248C TY 1 CL 2, compare to Parker V0709-90
Compound: V1005Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-40 °F
(-40 °C)
High Temp:
400 °F
(205 °C)
Description: M83485/1-XXX PER MIL-R-83485 GLT-type FKM Improved low temp resistance, compare to Parker VM835-75
Compound: V1007Datasheet: View DatasheetHardness: 90Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: General purpose high durometer, good in high pressure and dynamic applications, compare to Parker VA153-90
Compound: V1008Datasheet: View DatasheetHardness: 90Color: BrownLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description:
Compound: V1009Datasheet: View DatasheetHardness: 50Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: General purpose softer FKM, compare to Parker V0986-50
Compound: V1010Datasheet: View DatasheetHardness: 60Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: General purpose softer FKM, compare to Parker V0769-60 and Parco 9009-60
Compound: V1012Datasheet: View DatasheetHardness: 75Color: WhiteLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: White FKM, improved oxidation resistance, compare to Parker V1033-70
Compound: V1019Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: Internally lubricated with PTFE, reduces surface friction and sticking, similar to Parker V0848-75
Compound: V1020Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: Viton® ETP, base resistant , best chemically resistant FKM, compare to Parker V1260-75
Compound: V1033Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-40 °F
(-40 °C)
High Temp:
400 °F
(205 °C)
Description: Viton GFLT® recommended for Oxygenated Automotive Fuels (containing MeOH, EtOH, MTBE, etc. and Aromatic Hydrocarbon Process Fluid Chemicals. Compare to Parker V7594B
Compound: V1038Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-40 °F
(-40 °C)
High Temp:
400 °F
(205 °C)
Description: Viton GLT® Low temperature resistance, improved Water, Steam and Mineral Acids resistance
Compound: V1044Datasheet: View DatasheetHardness: 95Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: Very hard extrusion resistant type A FKM, compare to Parker V1238-95 and Parco 9021-95
Compound: V1062Datasheet: View DatasheetHardness: 90Color: GreenLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description:
Compound: V1073Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: FDA and 3A compliant
Compound: V1081Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: Viton® GF-S best value for widest chemical resistance FKM
Compound: V1082Datasheet: View DatasheetHardness: 90Color: BlackLow Temp:
-40 °F
(-40 °C)
High Temp:
400 °F
(205 °C)
Description: AED and extrusion resistant GLT type FKM
Compound: V1086Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-55 °F
(-50 °C)
High Temp:
400 °F
(205 °C)
Description: Extended low temperature FKM, Wide chemical resistance including H2S and Oxygenated fuels, compare to Parker V1289-75
Compound: V1088Datasheet: View DatasheetHardness: 75Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: Viton® F material for increased solvent and general chemical resistance
Compound: V1090Datasheet: View DatasheetHardness: 90Color: BlackLow Temp:
-40 °F
(-40 °C)
High Temp:
400 °F
(205 °C)
Description: AED resistant Viton GLT®, Norsok M710 and NACE TM0297 tested
Compound: V1118Datasheet: View DatasheetHardness: 70Color: WhiteLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: USP class VI medical grade, USDA 3A and FDA compliant
Compound: V1148Datasheet: View DatasheetHardness: 70Color: BlackLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: Metal detectable, FDA compliant type A FKM
Compound: V1160Datasheet: View DatasheetHardness: 90Color: BlackLow Temp:
-50 °F
(-50 °C)
High Temp:
440 °F
(225 °C)
Description: AED resistant, Norsok M710 and NACE T0297 tested Wide chemical resistance including H2S and Oxygenated fuels.
Compound: V1165Datasheet: View DatasheetHardness: 75Color: BlueLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description:
Compound: V1166Datasheet: View DatasheetHardness: 70Color: BlackLow Temp:
-60 °F
(-55 °C)
High Temp:
440 °F
(225 °C)
Description: Ultra-low temperature FKM commercial grade Wide chemical resistance including H2S and Oxygenated fuels.
Compound: V1183Datasheet: View DatasheetHardness: 60Color: BlackLow Temp:
-40 °F
(-40 °C)
High Temp:
400 °F
(205 °C)
Description: Terpolymer GLT type for low temperature applications
Compound: V1190Datasheet: View DatasheetHardness: 75Color: BrownLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description: NSF51 compliant for food contact
Compound: V1208Datasheet: View DatasheetHardness: 70Color: BlueLow Temp:
-15 °F
(-30 °C)
High Temp:
400 °F
(205 °C)
Description:
Temperature Range Comparison
Box: Base Material Family Range
Whiskers: Specialty Compounds
General Information
Full Name
FKM:
FKM (Viton®)
Fluorosilicone:
Fluorosilicone (FVMQ, FSIL)
Short Name
FKM:
FKM
Fluorosilicone:
Fluorosilicone
Common Names
FKM:
FKM, FPM (Europe), Fluoropolymer, Fluoroelastomer
Fluorosilicone:
Fluorosilicone, FVMQ
Mechanical Properties
Specialty Resistances
Aging
Aging
Aromatic Hydrocarbons
Aromatic Hydrocarbons
Chlorinated Hydrocarbons
Chlorinated Hydrocarbons
Common Fuels
Common Fuels
Compression Set
Compression Set
Ozone
Ozone
Silicone Oils
Silicone Oils
Vegetable Oils
Vegetable Oils
Most Acids
Some Petroleum Oils
Vacuum
Some Acids
Di-ester Lubricants
Ammonia
Halogenated Hydrocarbons
Wide Temperature Range
Acetone
Dry Heat
Brake Fluids
Phosphate Esters
Petroleum Oils
Jet Fuels
Strong Acids
Benzene
Non-flammable Hydraulic Fluids
Toluene
Aliphatic Hydrocarbons
Aromatic Fluorocarbons
Greases
Aliphatic Fluorocarbons
Mineral Oils
Diester Oils
Broad Spectrum Chemical Resistance
Diluted Alkalies
Solvents
Chlorinated Solvents
Steam
Animal Oils
Oxidizing Chemicals
Weathering And Sunlight
Specialty Resistances
FKM
Most Acids
Vacuum
Di-ester Lubricants
Halogenated Hydrocarbons
Acetone
Brake Fluids
Petroleum Oils
Strong Acids
Non-flammable Hydraulic Fluids
Aliphatic Hydrocarbons
Greases
Mineral Oils
Broad Spectrum Chemical Resistance
Solvents
Steam
Fluorosilicone
Some Petroleum Oils
Some Acids
Ammonia
Wide Temperature Range
Dry Heat
Phosphate Esters
Jet Fuels
Benzene
Toluene
Aromatic Fluorocarbons
Aliphatic Fluorocarbons
Diester Oils
Diluted Alkalies
Chlorinated Solvents
Animal Oils
Oxidizing Chemicals
Weathering And Sunlight
Brands
Viton®
Silastic®
Fluorel®
Technoflon®
Dai-el®
Brands
FKM
Viton®
Fluorel®
Technoflon®
Dai-el®
Fluorosilicone
Silastic®
Limitations
Amines
Amines
Ketones
Ketones
Hot Hydrofluoric
Phosphate-ester Bases
Skydrol Fluids
Adelhydes
Low Molecular Weight Ethers
Hydrazine
Chlorosulfonic Acids
Dynamic Applications
Low Molecular Weight Organic Solvents
Brake Fluids
Low Molecular Weight Organic Acids (formic And Acetic Acids)
Low Molecular Weight Esters
Polar Solvents
Ammonia
Glycol Brake Fluids (DOT 3, 4, 5.1)
Limitations
FKM
Hot Hydrofluoric
Skydrol Fluids
Low Molecular Weight Ethers
Chlorosulfonic Acids
Low Molecular Weight Organic Solvents
Low Molecular Weight Organic Acids (formic And Acetic Acids)
Low Molecular Weight Esters
Polar Solvents
Ammonia
Glycol Brake Fluids (DOT 3, 4, 5.1)
Fluorosilicone
Phosphate-ester Bases
Adelhydes
Hydrazine
Dynamic Applications
Brake Fluids
Marco Rubber & Plastics is an industry leader in custom sealing solutions that go beyond the limits of catalog commodities. Since 1980, our solutions have delivered reliable, long-lasting success for customers worldwide. We offer the largest inventory of specialty and standard sealing solutions backed by best-in-class technology, service and support.
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