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Fluorosilicone vs EPDM (EPR) for O-Rings and Seals

Fluorosilicone (FVMQ, FSIL)

EPDM (EP, EPR, Ethylene-Propylene Rubber)

Description
 Both materials are well suited for use in the -55 to 150°C range. Fluorosilicone 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, both materials are equally poor. The differences in compression set resistence show that EPDM has a slight advantage. Additionally, EPDM has a slight advantage when considering wear resistance. Also, Fluorosilicone has a slight advantage when comparing heat stability. Furthermore, both materials are equally Fair when comparing short term resilience. Finally, EPDM has a significant advantage when evaluating differences in permeation resilience. Both materials are resistant to weathering and sunlight, silicone oils and some acids, with Fluorosilicone having specific resistences to ozone, compression set, common fuels, vegetable oils, aromatic hydrocarbons, chlorinated hydrocarbons, aging, 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 and some petroleum oils. EPDM has specific resistence to acids, bases, steam, greases, phosphate ester hydraulic fluids, glycol brake fluids (DOT 3, 4, 5.1), cleaning agents, ketones, brake fluids and steam <300ºF.
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.
Compound: E1001Datasheet: View DatasheetHardness: 80Color: BlackLow Temp:
-65 °F
(-55 °C)
High Temp:
300 °F
(150 °C)
Description:
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Compound: E1130Datasheet: View DatasheetHardness: 70Color: BlackLow Temp:
-65 °F
(-55 °C)
High Temp:
300 °F
(150 °C)
Description: NSF51 compliant for food contact.
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
Temperature Range Comparison
Box: Base Material Family Range
Whiskers: Specialty Compounds
General Information
Full Name
Fluorosilicone:
Fluorosilicone (FVMQ, FSIL)
EPDM:
EPDM (EP, EPR, Ethylene-Propylene Rubber)
Short Name
Fluorosilicone:
Fluorosilicone
EPDM:
EPDM
Common Names
Fluorosilicone:
Fluorosilicone, FVMQ
EPDM:
EPDM, Ethylene Propylene Diene Monomer Rubber
Mechanical Properties
Specialty Resistances
Silicone Oils
Silicone Oils
Some Acids
Some Acids
Weathering And Sunlight
Weathering And Sunlight
Some Petroleum Oils
Steam <300ºF
Ammonia
Brake Fluids
Wide Temperature Range
Ketones
Dry Heat
Cleaning Agents
Phosphate Esters
Glycol Brake Fluids (DOT 3, 4, 5.1)
Jet Fuels
Phosphate Ester Hydraulic Fluids
Benzene
Greases
Toluene
Steam
Aromatic Fluorocarbons
Bases
Aliphatic Fluorocarbons
Acids
Diester Oils
Diluted Alkalies
Chlorinated Solvents
Animal Oils
Oxidizing Chemicals
Aging
Chlorinated Hydrocarbons
Aromatic Hydrocarbons
Vegetable Oils
Common Fuels
Compression Set
Ozone
Specialty Resistances
Fluorosilicone
Some Petroleum Oils
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
Aging
Chlorinated Hydrocarbons
Aromatic Hydrocarbons
Vegetable Oils
Common Fuels
Compression Set
Ozone
EPDM
Steam <300ºF
Brake Fluids
Ketones
Cleaning Agents
Glycol Brake Fluids (DOT 3, 4, 5.1)
Phosphate Ester Hydraulic Fluids
Greases
Steam
Bases
Acids
Brands
Silastic®
Brands
Fluorosilicone
Silastic®
EPDM
Limitations
Phosphate-ester Bases
Kerosene
Adelhydes
Non-polar Solvents
Hydrazine
Halogenated Solvents
Dynamic Applications
Concentrated Acids
Amines
Petroleum Oils
Brake Fluids
Aromatic Hydrocarbons
Ketones
Aliphatic Hydrocarbons
Mineral Oils
Common Fuels
Alternative Fuels
Limitations
Fluorosilicone
Phosphate-ester Bases
Adelhydes
Hydrazine
Dynamic Applications
Amines
Brake Fluids
Ketones
EPDM
Kerosene
Non-polar Solvents
Halogenated Solvents
Concentrated Acids
Petroleum Oils
Aromatic Hydrocarbons
Aliphatic Hydrocarbons
Mineral Oils
Common Fuels
Alternative Fuels
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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