EPDM (EPR) vs FKM (Viton®) for O-Rings and Seals
EPDM (EP, EPR, Ethylene-Propylene Rubber) | FKM (Viton®) |
Description | Both materials are well suited for use in the -30 to 150°C range. FKM has an advantage in lower temperatures and EPDM 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, EPDM has a slight advantage. The differences in compression set resistence show that FKM has a slight advantage. Additionally, FKM has a slight advantage when considering wear resistance. Also, FKM has a slight advantage when comparing heat stability. Furthermore, both materials are equally Fair when comparing short term resilience. Finally, FKM has a slight advantage when evaluating differences in permeation resilience. Both materials are resistant to steam, greases, silicone oils and brake fluids, with EPDM having specific resistences to acids, bases, phosphate ester hydraulic fluids, weathering and sunlight, glycol brake fluids (DOT 3, 4, 5.1), cleaning agents, ketones, some acids and steam <300ºF. FKM has specific resistence to ozone, solvents, compression set, broad spectrum chemical resistance, common fuels, mineral oils, vegetable oils, aliphatic hydrocarbons, aromatic hydrocarbons, chlorinated hydrocarbons, non-flammable hydraulic fluids, aging, strong acids, petroleum oils, acetone, halogenated hydrocarbons, di-ester lubricants, vacuum and most acids. | |
| Compounds |
|---|
| Marco Compound Number | Datasheet | Hardness (Shore A) | Color | Low Temp | High Temp | Features | |
|---|---|---|---|---|---|---|---|
| Compound: E1000 | Datasheet:  | Hardness: 70 | Color: Black | Low Temp: -65 °F (-55 °C) | High Temp: 300 °F (150 °C) | Description: Peroxide cured for improved aging, thermal and chemical stability. NSF61 compliant for drinking water applications and FDA compliant per 21 CFR 177.2600. Compare to Parker E1549-70 and Parco 5323-70. | |
| Compound: E1001 | Datasheet: | Hardness: 80 | Color: Black | Low Temp: -65 °F (-55 °C) | High Temp: 300 °F (150 °C) | Description: | |
| Compound: E1005 | Datasheet: | Hardness: 70 | Color: Black | Low Temp: -65 °F (-55 °C) | High Temp: 265 °F (130 °C) | Description: General purpose sulfur cured EPDM. Low cost compound with large stocked inventory. Alternative hardness and color options available. Compare to Parker E0603-70. | |
| Compound: E1055 | Datasheet: | Hardness: 70 | Color: Black | Low Temp: -65 °F (-55 °C) | High Temp: 300 °F (150 °C) | Description: Peroxide cured for improved aging, thermal, and chemical stability. Large stocked inventory. Alternative hardness and color options available. | |
| Compound: E1069 | Datasheet: | Hardness: 70 | Color: Black | Low Temp: -65 °F (-55 °C) | High Temp: 250 °F (125 °C) | Description: NSF61 compliant for drinking water applications. Internally lubricated with Struktol. | |
| Compound: E1071 | Datasheet: | Hardness: 75 | Color: Black | Low Temp: -50 °F (-50 °C) | High Temp: 260 °F (130 °C) | Description: Conductive silver plated nickel filler for EMI / RFI shielding applications. Compare to Parker Chomerics E6434. | |
| Compound: E1074 | Datasheet: | Hardness: 70 | Color: Off-white | Low Temp: -65 °F (-55 °C) | High Temp: 300 °F (150 °C) | Description: USP Class VI, 3A-Dairy, USDA, and FDA compliant. | |
| Compound: E1077 | Datasheet: | Hardness: 75 | Color: Black | Low Temp: -25 °F (-30 °C) | High Temp: 215 °F (100 °C) | Description: Conductive nickel plated graphite filler for EMI / RFI shielding applications. Compare to Parker Chomerics E6306. | |
| Compound: E1087 | Datasheet: | Hardness: 80 | Color: Black | Low Temp: -65 °F (-55 °C) | High Temp: 300 °F (150 °C) | Description: Compounded to have an extemely high tensile strength. Peroxide cured for improved aging, thermal, and chemical stability. | |
| Compound: E1097 | Datasheet: | Hardness: 70 | Color: Black | Low Temp: -65 °F (-55 °C) | High Temp: 300 °F (150 °C) | Description: Peroxide cured, NSF61, 3A-Dairy, USDA, and FDA compliant. Improved chloramine resistance. | |
| Compound: E1100 | Datasheet: | Hardness: 70 | Color: Tan | Low Temp: -50 °F (-50 °C) | High Temp: 270 °F (135 °C) | Description: Silver & Aluminum filled EPDM for conductivity, and EMI & RFI Shielding. | |
| Compound: E1118 | Datasheet: | Hardness: 75 | Color: Black | Low Temp: -45 °F (-45 °C) | High Temp: 300 °F (150 °C) | Description: Nuclear safe, improved radiation resistance, low extractables. Compare to James Walker Shieldseal 663. | |
| Compound: E1121 | Datasheet: | Hardness: 90 | Color: Black | Low Temp: -60 °F (-50 °C) | High Temp: 550 °F (290 °C) | Description: Y267 cured for greatly improved steam resistance. High hardness compound with excellent Explosive Decompression (ED) resistance. Compare to Parker e0962-90. | |
| Compound: E1130 | Datasheet: | Hardness: 70 | Color: Black | Low Temp: -65 °F (-55 °C) | High Temp: 300 °F (150 °C) | Description: NSF51 compliant for food contact. | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| Compound: V1008 | Datasheet: | Hardness: 90 | Color: Brown | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| Compound: V1062 | Datasheet: | Hardness: 90 | Color: Green | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: | |
| Compound: V1073 | Datasheet: | Hardness: 75 | Color: Black | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: FDA and 3A compliant | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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. | |
| Compound: V1165 | Datasheet: | Hardness: 75 | Color: Blue | Low Temp: -15 °F (-30 °C) | High Temp: 400 °F (205 °C) | Description: | |
| 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. | |
| 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 | |
| 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 | |
| Compound: V1208 | Datasheet: | Hardness: 70 | Color: Blue | Low 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 | EPDM: EPDM (EP, EPR, Ethylene-Propylene Rubber) | FKM: FKM (Viton®) |
Short Name | EPDM: EPDM | FKM: FKM |
Common Names | EPDM: EPDM, Ethylene Propylene Diene Monomer Rubber | FKM: FKM, FPM (Europe), Fluoropolymer, Fluoroelastomer |
| Mechanical Properties |
|---|
| Specialty Resistances | ||
|---|---|---|
Brake Fluids | Brake Fluids | |
Greases | Greases | |
Silicone Oils | Silicone Oils | |
Steam | Steam | |
Steam <300ºF | Most Acids | |
Some Acids | Vacuum | |
Ketones | Di-ester Lubricants | |
Cleaning Agents | Halogenated Hydrocarbons | |
Glycol Brake Fluids (DOT 3, 4, 5.1) | Acetone | |
Weathering And Sunlight | Petroleum Oils | |
Phosphate Ester Hydraulic Fluids | Strong Acids | |
Bases | Aging | |
Acids | Non-flammable Hydraulic Fluids | |
Chlorinated Hydrocarbons | ||
Aromatic Hydrocarbons | ||
Aliphatic Hydrocarbons | ||
Vegetable Oils | ||
Mineral Oils | ||
Common Fuels | ||
Broad Spectrum Chemical Resistance | ||
Compression Set | ||
Solvents | ||
Ozone |
| Specialty Resistances | |
|---|---|
| EPDM | Steam <300ºF Some Acids Ketones Cleaning Agents Glycol Brake Fluids (DOT 3, 4, 5.1) Weathering And Sunlight Phosphate Ester Hydraulic Fluids Bases Acids |
| FKM | Most Acids Vacuum Di-ester Lubricants Halogenated Hydrocarbons Acetone Petroleum Oils Strong Acids Aging Non-flammable Hydraulic Fluids Chlorinated Hydrocarbons Aromatic Hydrocarbons Aliphatic Hydrocarbons Vegetable Oils Mineral Oils Common Fuels Broad Spectrum Chemical Resistance Compression Set Solvents Ozone |
| Brands | ||
|---|---|---|
Viton® | ||
Fluorel® | ||
Technoflon® | ||
Dai-el® |
| Brands | |
|---|---|
| EPDM | |
| FKM | Viton® Fluorel® Technoflon® Dai-el® |
| Limitations | ||
|---|---|---|
Kerosene | Hot Hydrofluoric | |
Non-polar Solvents | Skydrol Fluids | |
Halogenated Solvents | Low Molecular Weight Ethers | |
Concentrated Acids | Chlorosulfonic Acids | |
Petroleum Oils | Low Molecular Weight Organic Solvents | |
Aromatic Hydrocarbons | Low Molecular Weight Organic Acids (formic And Acetic Acids) | |
Aliphatic Hydrocarbons | Low Molecular Weight Esters | |
Mineral Oils | Polar Solvents | |
Common Fuels | Ammonia | |
Alternative Fuels | Amines | |
Ketones | ||
Glycol Brake Fluids (DOT 3, 4, 5.1) |
| Limitations | |
|---|---|
| EPDM | Kerosene Non-polar Solvents Halogenated Solvents Concentrated Acids Petroleum Oils Aromatic Hydrocarbons Aliphatic Hydrocarbons Mineral Oils Common Fuels Alternative Fuels |
| 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 Amines Ketones Glycol Brake Fluids (DOT 3, 4, 5.1) |
