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

EPDM (EP, EPR, Ethylene-Propylene Rubber)

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 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 significant advantage. Additionally, EPDM has a significant advantage when considering wear resistance. Also, EPDM has a significant advantage when comparing heat stability. Furthermore, Polyurethane has a significant advantage when comparing short term resilience. Finally, both materials are equally Poor when evaluating differences in permeation resilience. Both materials are resistant to greases, weathering and sunlight, silicone oils and brake fluids, with EPDM having specific resistences to acids, bases, steam, phosphate ester hydraulic fluids, glycol brake fluids (DOT 3, 4, 5.1), cleaning agents, ketones, some acids and steam <300ºF. Polyurethane has specific resistence to ozone, common fuels, mineral oils, aliphatic hydrocarbons, chlorinated hydrocarbons, aging, hydraulic fluids, water, oxygen, tear, silicone greases, some petroleum oils and some hydrocarbon fuels.
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: P1000Datasheet: View DatasheetHardness: 70Color: Yellow translucentLow Temp:
-65 °F
(-55 °C)
High Temp:
250 °F
(125 °C)
Description: High performance 70 durometer PolyurethaneGet QuoteBuy Online
Compound: P1001Datasheet: View DatasheetHardness: 90Color: Yellow translucentLow Temp:
-65 °F
(-55 °C)
High Temp:
250 °F
(125 °C)
Description: High performance 90 durometer PolyurethaneGet QuoteBuy Online
Compound: P1004Datasheet: View DatasheetHardness: 90Color: TranslucentLow Temp:
-30 °F
(-35 °C)
High Temp:
180 °F
(85 °C)
Description: General purpose 90 durometer PolyurethaneGet QuoteBuy Online
Compound: P1006Datasheet: View DatasheetHardness: 70Color: TranslucentLow Temp:
-30 °F
(-35 °C)
High Temp:
180 °F
(85 °C)
Description: General purpose 70 durometer PolyurethaneGet QuoteBuy Online
Temperature Range Comparison
Box: Base Material Family Range
Whiskers: Specialty Compounds
General Information
Full Name
EPDM:
EPDM (EP, EPR, Ethylene-Propylene Rubber)
Polyurethane:
Polyurethane (PU, TPU)
Short Name
EPDM:
EPDM
Polyurethane:
Polyurethane
Common Names
EPDM:
EPDM, Ethylene Propylene Diene Monomer Rubber
Polyurethane:
Urethane, AU, EU, PU
Mechanical Properties
Specialty Resistances
Brake Fluids
Brake Fluids
Greases
Greases
Silicone Oils
Silicone Oils
Weathering And Sunlight
Weathering And Sunlight
Steam <300ºF
Some Hydrocarbon Fuels
Some Acids
Some Petroleum Oils
Ketones
Silicone Greases
Cleaning Agents
Tear
Glycol Brake Fluids (DOT 3, 4, 5.1)
Oxygen
Phosphate Ester Hydraulic Fluids
Water
Steam
Hydraulic Fluids
Bases
Aging
Acids
Chlorinated Hydrocarbons
Aliphatic Hydrocarbons
Mineral Oils
Common Fuels
Ozone
Specialty Resistances
EPDM
Steam <300ºF
Some Acids
Ketones
Cleaning Agents
Glycol Brake Fluids (DOT 3, 4, 5.1)
Phosphate Ester Hydraulic Fluids
Steam
Bases
Acids
Polyurethane
Some Hydrocarbon Fuels
Some Petroleum Oils
Silicone Greases
Tear
Oxygen
Water
Hydraulic Fluids
Aging
Chlorinated Hydrocarbons
Aliphatic Hydrocarbons
Mineral Oils
Common Fuels
Ozone
Brands
Vibrathane®
Millathane®
Adiprene®
Brands
EPDM
Polyurethane
Vibrathane®
Millathane®
Adiprene®
Limitations
Kerosene
Hot Water
Non-polar Solvents
Alcohols
Halogenated Solvents
Alkalis
Concentrated Acids
Ethers
Petroleum Oils
Glycols
Aromatic Hydrocarbons
Esters
Aliphatic Hydrocarbons
Amines
Mineral Oils
Ketones
Common Fuels
Steam
Alternative Fuels
Acids
Limitations
EPDM
Kerosene
Non-polar Solvents
Halogenated Solvents
Concentrated Acids
Petroleum Oils
Aromatic Hydrocarbons
Aliphatic Hydrocarbons
Mineral Oils
Common Fuels
Alternative Fuels
Polyurethane
Hot Water
Alcohols
Alkalis
Ethers
Glycols
Esters
Amines
Ketones
Steam
Acids