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

Polyurethane (PU, TPU)

FKM (Viton®)

Description
 Both materials are well suited for use in the -23 to 66°C range. FKM 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, both materials are equally Poor. The differences in compression set resistence show that FKM has a significant advantage. Additionally, FKM has a significant advantage when considering wear resistance. Also, FKM has a significant advantage when comparing heat stability. Furthermore, Polyurethane has a significant advantage when comparing short term resilience. Finally, FKM has a slight advantage when evaluating differences in permeation resilience. Both materials are resistant to ozone, common fuels, mineral oils, greases, aliphatic hydrocarbons, chlorinated hydrocarbons, aging, silicone oils and brake fluids, with Polyurethane having specific resistences to weathering and sunlight, hydraulic fluids, water, oxygen, tear, silicone greases, some petroleum oils and some hydrocarbon fuels. FKM has specific resistence to steam, solvents, compression set, broad spectrum chemical resistance, vegetable oils, aromatic hydrocarbons, non-flammable hydraulic fluids, strong acids, petroleum oils, acetone, halogenated hydrocarbons, di-ester lubricants, vacuum and most acids.
Compounds
Marco
Compound
Number		DatasheetHardness
(Shore A)		ColorLow TempHigh TempFeatures
Compound: P1000Datasheet: View DatasheetHardness: 70Color: Yellow translucentLow Temp:
-65 °F
(-55 °C)
High Temp:
250 °F
(125 °C)
Description: High performance 70 durometer Polyurethane
Compound: P1001Datasheet: View DatasheetHardness: 90Color: Yellow translucentLow Temp:
-65 °F
(-55 °C)
High Temp:
250 °F
(125 °C)
Description: High performance 90 durometer Polyurethane
Compound: P1004Datasheet: View DatasheetHardness: 90Color: TranslucentLow Temp:
-30 °F
(-35 °C)
High Temp:
180 °F
(85 °C)
Description: General purpose 90 durometer Polyurethane
Compound: P1006Datasheet: View DatasheetHardness: 70Color: TranslucentLow Temp:
-30 °F
(-35 °C)
High Temp:
180 °F
(85 °C)
Description: General purpose 70 durometer Polyurethane
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
Polyurethane:
Polyurethane (PU, TPU)
FKM:
FKM (Viton®)
Short Name
Polyurethane:
Polyurethane
FKM:
FKM
Common Names
Polyurethane:
Urethane, AU, EU, PU
FKM:
FKM, FPM (Europe), Fluoropolymer, Fluoroelastomer
Mechanical Properties
Specialty Resistances
Aging
Aging
Aliphatic Hydrocarbons
Aliphatic Hydrocarbons
Brake Fluids
Brake Fluids
Chlorinated Hydrocarbons
Chlorinated Hydrocarbons
Common Fuels
Common Fuels
Greases
Greases
Mineral Oils
Mineral Oils
Ozone
Ozone
Silicone Oils
Silicone Oils
Some Hydrocarbon Fuels
Most Acids
Some Petroleum Oils
Vacuum
Silicone Greases
Di-ester Lubricants
Tear
Halogenated Hydrocarbons
Oxygen
Acetone
Water
Petroleum Oils
Hydraulic Fluids
Strong Acids
Weathering And Sunlight
Non-flammable Hydraulic Fluids
Aromatic Hydrocarbons
Vegetable Oils
Broad Spectrum Chemical Resistance
Compression Set
Solvents
Steam
Specialty Resistances
Polyurethane
Some Hydrocarbon Fuels
Some Petroleum Oils
Silicone Greases
Tear
Oxygen
Water
Hydraulic Fluids
Weathering And Sunlight
FKM
Most Acids
Vacuum
Di-ester Lubricants
Halogenated Hydrocarbons
Acetone
Petroleum Oils
Strong Acids
Non-flammable Hydraulic Fluids
Aromatic Hydrocarbons
Vegetable Oils
Broad Spectrum Chemical Resistance
Compression Set
Solvents
Steam
Brands
Vibrathane®
Viton®
Millathane®
Fluorel®
Adiprene®
Technoflon®
Dai-el®
Brands
Polyurethane
Vibrathane®
Millathane®
Adiprene®
FKM
Viton®
Fluorel®
Technoflon®
Dai-el®
Limitations
Amines
Amines
Ketones
Ketones
Hot Water
Hot Hydrofluoric
Alcohols
Skydrol Fluids
Alkalis
Low Molecular Weight Ethers
Ethers
Chlorosulfonic Acids
Glycols
Low Molecular Weight Organic Solvents
Esters
Low Molecular Weight Organic Acids (formic And Acetic Acids)
Steam
Low Molecular Weight Esters
Acids
Polar Solvents
Ammonia
Glycol Brake Fluids (DOT 3, 4, 5.1)
Limitations
Polyurethane
Hot Water
Alcohols
Alkalis
Ethers
Glycols
Esters
Steam
Acids
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)
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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