EPDM (EPR) vs Aflas® for O-Rings and Seals

EPDM (EP, EPR, Ethylene-Propylene Rubber)

Aflas® (TFE/P, FEPM)

Description
Both materials are well suited for use in the -10 to 150°C range. Aflas® 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 EPDM has a slight advantage. Additionally, EPDM has a slight advantage when considering wear resistance. Also, Aflas® has a slight advantage when comparing heat stability. Furthermore, both materials are equally Fair when comparing short term resilience. Finally, Aflas® has a slight advantage when evaluating differences in permeation resilience. Both materials are resistant to bases, steam and brake fluids, with EPDM having specific resistences to acids, greases, phosphate ester hydraulic fluids, weathering and sunlight, silicone oils, glycol brake fluids (DOT 3, 4, 5.1), cleaning agents, ketones, some acids and steam <300ºF. Aflas® has specific resistence to ozone, hot amines, solvents, highly reactive organic chemicals, highly reactive inorganic chemicals, Hydrogen Sulfide (H2S), gamma-ray radiation, strong acids, petroleum oils, acetone, amines, ammonia, halogenated hydrocarbons, di-ester lubricants, vacuum, low molecular weight esters, low molecular weight ethers, skydrol fluids, most acids and steam <400ºF.
Compounds
Marco
Compound
Number
DatasheetHardness
(Shore A)
ColorLow TempHigh TempFeatures
Compound: E1000Datasheet: View DatasheetHardness: 70Color: BlackLow 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.Get QuoteBuy Online
Compound: E1005Datasheet: View DatasheetHardness: 70Color: BlackLow 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.Get QuoteBuy Online
Compound: E1055Datasheet: View DatasheetHardness: 70Color: BlackLow 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.Get QuoteBuy Online
Compound: E1069Datasheet: View DatasheetHardness: 70Color: BlackLow Temp:
-65 °F
(-55 °C)
High Temp:
250 °F
(125 °C)
Description: NSF61 compliant for drinking water applications. Internally lubricated with Struktol.Get QuoteBuy Online
Compound: E1071Datasheet: View DatasheetHardness: 75Color: BlackLow 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.Get QuoteBuy Online
Compound: E1074Datasheet: View DatasheetHardness: 70Color: Off-whiteLow Temp:
-65 °F
(-55 °C)
High Temp:
300 °F
(150 °C)
Description: USP Class VI, 3A-Dairy, USDA, and FDA compliant.Get QuoteBuy Online
Compound: E1077Datasheet: View DatasheetHardness: 75Color: BlackLow 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.Get QuoteBuy Online
Compound: E1087Datasheet: View DatasheetHardness: 80Color: BlackLow 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.Get QuoteBuy Online
Compound: E1097Datasheet: View DatasheetHardness: 70Color: BlackLow Temp:
-65 °F
(-55 °C)
High Temp:
300 °F
(150 °C)
Description: Peroxide cured, NSF61, 3A-Dairy, USDA, and FDA compliant. Improved chloramine resistance.Get QuoteBuy Online
Compound: E1100Datasheet: View DatasheetHardness: 70Color: TanLow Temp:
-50 °F
(-50 °C)
High Temp:
270 °F
(135 °C)
Description: Silver & Aluminum filled EPDM for conductivity, and EMI & RFI Shielding.Get QuoteBuy Online
Compound: E1118Datasheet: View DatasheetHardness: 75Color: BlackLow 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.Get QuoteBuy Online
Compound: E1121Datasheet: View DatasheetHardness: 90Color: BlackLow 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.Get QuoteBuy Online
Compound: E1130Datasheet: View DatasheetHardness: 70Color: BlackLow Temp:
-65 °F
(-55 °C)
High Temp:
300 °F
(150 °C)
Description: NSF51 compliant for food contact.Get QuoteBuy Online
Compound: L1000Datasheet: View DatasheetHardness: 80Color: BlackLow Temp:
15 °F
(-10 °C)
High Temp:
450 °F
(235 °C)
Description: General purpose Aflas ®, steam resistant, sour gas resistant, acid resistance, for chemical and oil industries  (higher performance Alfas® versions avaialble for oil drilling environments)Get QuoteBuy Online
Compound: L1003Datasheet: View DatasheetHardness: 90Color: BlackLow Temp:
15 °F
(-10 °C)
High Temp:
450 °F
(235 °C)
Description: General purpose Aflas® with a higher durometer. Steam resistant, sour gas resistant, acid resistance, for chemical and oil industries. Good for high pressure applicationsGet QuoteBuy Online
Compound: L1009Datasheet: View DatasheetHardness: 90Color: BlackLow Temp:
30 °F
(0 °C)
High Temp:
475 °F
(250 °C)
Description: Higher performance and higher durometer Aflas®, improved explosive decompression resistance, steam resistance, sour gas resistance, acid resistance, tested to Norsok M-710 for oilfieldGet QuoteBuy Online
Compound: L1011Datasheet: View DatasheetHardness: 80Color: BlackLow Temp:
15 °F
(-10 °C)
High Temp:
450 °F
(235 °C)
Description: FDA/USP class VI compliant Aflas® material. Good for a variety of Pharma and Food related applications.Get QuoteBuy Online
Temperature Range Comparison
Box: Base Material Family Range
Whiskers: Specialty Compounds
General Information
Full Name
EPDM:
EPDM (EP, EPR, Ethylene-Propylene Rubber)
Aflas®:
Aflas® (TFE/P, FEPM)
Short Name
EPDM:
EPDM
Aflas®:
Aflas®
Common Names
EPDM:
EPDM, Ethylene Propylene Diene Monomer Rubber
Aflas®:
Aflas, TFE/P, FEPM
Mechanical Properties
Specialty Resistances
Bases
Bases
Brake Fluids
Brake Fluids
Steam
Steam
Steam <300ºF
Steam <400ºF
Some Acids
Most Acids
Ketones
Skydrol Fluids
Cleaning Agents
Low Molecular Weight Ethers
Glycol Brake Fluids (DOT 3, 4, 5.1)
Low Molecular Weight Esters
Silicone Oils
Vacuum
Weathering And Sunlight
Di-ester Lubricants
Phosphate Ester Hydraulic Fluids
Halogenated Hydrocarbons
Greases
Ammonia
Acids
Amines
Acetone
Petroleum Oils
Strong Acids
Gamma-ray Radiation
Hydrogen Sulfide (H2S)
Highly Reactive Inorganic Chemicals
Highly Reactive Organic Chemicals
Solvents
Hot Amines
Ozone
Specialty Resistances
EPDM
Steam <300ºF
Some Acids
Ketones
Cleaning Agents
Glycol Brake Fluids (DOT 3, 4, 5.1)
Silicone Oils
Weathering And Sunlight
Phosphate Ester Hydraulic Fluids
Greases
Acids
Aflas®
Steam <400ºF
Most Acids
Skydrol Fluids
Low Molecular Weight Ethers
Low Molecular Weight Esters
Vacuum
Di-ester Lubricants
Halogenated Hydrocarbons
Ammonia
Amines
Acetone
Petroleum Oils
Strong Acids
Gamma-ray Radiation
Hydrogen Sulfide (H2S)
Highly Reactive Inorganic Chemicals
Highly Reactive Organic Chemicals
Solvents
Hot Amines
Ozone
Limitations
Kerosene
Carbon Tetrachloride
Non-polar Solvents
Aromatic Fuels
Halogenated Solvents
Organic Refrigerants
Concentrated Acids
Ketones
Petroleum Oils
Chlorinated Hydrocarbons
Aromatic Hydrocarbons
Aliphatic Hydrocarbons
Mineral Oils
Common Fuels
Alternative Fuels
Limitations
EPDM
Kerosene
Non-polar Solvents
Halogenated Solvents
Concentrated Acids
Petroleum Oils
Aromatic Hydrocarbons
Aliphatic Hydrocarbons
Mineral Oils
Common Fuels
Alternative Fuels
Aflas®
Carbon Tetrachloride
Aromatic Fuels
Organic Refrigerants
Ketones
Chlorinated Hydrocarbons