FKM (Viton®) vs Polyurethane for O-Rings and Seals
FKM (Viton®) | Polyurethane (PU, TPU) |
Description | Both materials are well suited for use in the -23 to 66°C range. Polyurethane 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 FKM having specific resistences 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. Polyurethane has specific resistence to weathering and sunlight, hydraulic fluids, water, oxygen, tear, silicone greases, some petroleum oils and some hydrocarbon fuels. | |
| Compounds |
|---|
| Marco Compound Number | Datasheet | Hardness (Shore A) | Color | Low Temp | High Temp | Features | |||
|---|---|---|---|---|---|---|---|---|---|
| Compound: P1000 | Datasheet:  | Hardness: 70 | Color: Yellow translucent | Low Temp: -65 °F (-55 °C) | High Temp: 250 °F (125 °C) | Description: High performance 70 durometer Polyurethane | Get Quote | Buy Online | |
| Compound: P1001 | Datasheet: | Hardness: 90 | Color: Yellow translucent | Low Temp: -65 °F (-55 °C) | High Temp: 250 °F (125 °C) | Description: High performance 90 durometer Polyurethane | Get Quote | Buy Online | |
| Compound: P1004 | Datasheet: | Hardness: 90 | Color: Translucent | Low Temp: -30 °F (-35 °C) | High Temp: 180 °F (85 °C) | Description: General purpose 90 durometer Polyurethane | Get Quote | Buy Online | |
| Compound: P1006 | Datasheet: | Hardness: 70 | Color: Translucent | Low Temp: -30 °F (-35 °C) | High Temp: 180 °F (85 °C) | Description: General purpose 70 durometer Polyurethane | Get Quote | Buy Online | |
| Compound: V1000 | Datasheet: | Hardness: 75 | Color: Black | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: General purpose, low cost & high inventory FKM | Get Quote | Buy Online | |
| Compound: V1002 | Datasheet: | Hardness: 75 | Color: Black | Low 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 | Get Quote | Buy Online | |
| Compound: V1003 | Datasheet: | Hardness: 75 | Color: Brown | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: Brown FKM Viton, improved oxidation resistance, compare to Parker V884-75 | Get Quote | Buy Online | |
| Compound: V1004 | Datasheet: | Hardness: 90 | Color: Black | Low 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 | Get Quote | Buy Online | |
| Compound: V1005 | Datasheet: | Hardness: 75 | Color: Black | Low 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 | Get Quote | Buy Online | |
| Compound: V1007 | Datasheet: | Hardness: 90 | Color: Black | Low 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 | Get Quote | Buy Online | |
| Compound: V1008 | Datasheet: | Hardness: 90 | Color: Brown | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: | Get Quote | Buy Online | |
| Compound: V1009 | Datasheet: | Hardness: 50 | Color: Black | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: General purpose softer FKM, compare to Parker V0986-50 | Get Quote | Buy Online | |
| Compound: V1010 | Datasheet: | Hardness: 60 | Color: Black | Low 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 | Get Quote | Buy Online | |
| Compound: V1012 | Datasheet: | Hardness: 75 | Color: White | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: White FKM, improved oxidation resistance, compare to Parker V1033-70 | Get Quote | Buy Online | |
| Compound: V1019 | Datasheet: | Hardness: 75 | Color: Black | Low 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 | Get Quote | Buy Online | |
| Compound: V1020 | Datasheet: | Hardness: 75 | Color: Black | Low 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 | Get Quote | Buy Online | |
| Compound: V1033 | Datasheet: | Hardness: 75 | Color: Black | Low 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 | Get Quote | Buy Online | |
| Compound: V1038 | Datasheet: | Hardness: 75 | Color: Black | Low Temp: -40 °F (-40 °C) | High Temp: 400 °F (205 °C) | Description: Viton GLT® Low temperature resistance, improved Water, Steam and Mineral Acids resistance | Get Quote | Buy Online | |
| Compound: V1044 | Datasheet: | Hardness: 95 | Color: Black | Low 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 | Get Quote | Buy Online | |
| Compound: V1062 | Datasheet: | Hardness: 90 | Color: Green | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: | Get Quote | Buy Online | |
| Compound: V1073 | Datasheet: | Hardness: 75 | Color: Black | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: FDA and 3A compliant | Get Quote | Buy Online | |
| Compound: V1081 | Datasheet: | Hardness: 75 | Color: Black | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: Viton® GF-S best value for widest chemical resistance FKM | Get Quote | Buy Online | |
| Compound: V1082 | Datasheet: | Hardness: 90 | Color: Black | Low Temp: -40 °F (-40 °C) | High Temp: 400 °F (205 °C) | Description: AED and extrusion resistant GLT type FKM | Get Quote | Buy Online | |
| Compound: V1086 | Datasheet: | Hardness: 75 | Color: Black | Low 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 | Get Quote | Buy Online | |
| Compound: V1088 | Datasheet: | Hardness: 75 | Color: Black | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: Viton® F material for increased solvent and general chemical resistance | Get Quote | Buy Online | |
| Compound: V1090 | Datasheet: | Hardness: 90 | Color: Black | Low Temp: -40 °F (-40 °C) | High Temp: 400 °F (205 °C) | Description: AED resistant Viton GLT®, Norsok M710 and NACE TM0297 tested | Get Quote | Buy Online | |
| Compound: V1118 | Datasheet: | Hardness: 70 | Color: White | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: USP class VI medical grade, USDA 3A and FDA compliant | Get Quote | Buy Online | |
| Compound: V1148 | Datasheet: | Hardness: 70 | Color: Black | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: Metal detectable, FDA compliant type A FKM | Get Quote | Buy Online | |
| Compound: V1160 | Datasheet: | Hardness: 90 | Color: Black | Low 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. | Get Quote | Buy Online | |
| Compound: V1165 | Datasheet: | Hardness: 75 | Color: Blue | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: | Get Quote | Buy Online | |
| Compound: V1166 | Datasheet: | Hardness: 70 | Color: Black | Low 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. | Get Quote | Buy Online | |
| Compound: V1183 | Datasheet: | Hardness: 60 | Color: Black | Low Temp: -40 °F (-40 °C) | High Temp: 400 °F (205 °C) | Description: Terpolymer GLT type for low temperature applications | Get Quote | Buy Online | |
| Compound: V1190 | Datasheet: | Hardness: 75 | Color: Brown | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: NSF51 compliant for food contact | Get Quote | Buy Online | |
| Compound: V1208 | Datasheet: | Hardness: 70 | Color: Blue | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: | Get Quote | Buy Online |
| Temperature Range Comparison |
|---|
Box: Base Material Family Range
Whiskers: Specialty Compounds
| General Information | ||
|---|---|---|
Full Name | FKM: FKM (Viton®) | Polyurethane: Polyurethane (PU, TPU) |
Short Name | FKM: FKM | Polyurethane: Polyurethane |
Common Names | FKM: FKM, FPM (Europe), Fluoropolymer, Fluoroelastomer | Polyurethane: Urethane, AU, EU, PU |
| 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 | |
Most Acids | Some Hydrocarbon Fuels | |
Vacuum | Some Petroleum Oils | |
Di-ester Lubricants | Silicone Greases | |
Halogenated Hydrocarbons | Tear | |
Acetone | Oxygen | |
Petroleum Oils | Water | |
Strong Acids | Hydraulic Fluids | |
Non-flammable Hydraulic Fluids | Weathering And Sunlight | |
Aromatic Hydrocarbons | ||
Vegetable Oils | ||
Broad Spectrum Chemical Resistance | ||
Compression Set | ||
Solvents | ||
Steam |
| Specialty Resistances | |
|---|---|
| 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 |
| Polyurethane | Some Hydrocarbon Fuels Some Petroleum Oils Silicone Greases Tear Oxygen Water Hydraulic Fluids Weathering And Sunlight |
| Brands | ||
|---|---|---|
Viton® | Vibrathane® | |
Fluorel® | Millathane® | |
Technoflon® | Adiprene® | |
Dai-el® |
| Brands | |
|---|---|
| FKM | Viton® Fluorel® Technoflon® Dai-el® |
| Polyurethane | Vibrathane® Millathane® Adiprene® |
| Limitations | ||
|---|---|---|
Amines | Amines | |
Ketones | Ketones | |
Hot Hydrofluoric | Hot Water | |
Skydrol Fluids | Alcohols | |
Low Molecular Weight Ethers | Alkalis | |
Chlorosulfonic Acids | Ethers | |
Low Molecular Weight Organic Solvents | Glycols | |
Low Molecular Weight Organic Acids (formic And Acetic Acids) | Esters | |
Low Molecular Weight Esters | Steam | |
Polar Solvents | Acids | |
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) |
| Polyurethane | Hot Water Alcohols Alkalis Ethers Glycols Esters Steam Acids |
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.
