Polyurethane vs Aflas® for O-Rings and Seals
Polyurethane (PU, TPU) | Aflas® (TFE/P, FEPM) |
Description | Both materials are well suited for use in the -10 to 66°C range. Aflas® has an advantage in lower temperatures and Aflas® 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 Aflas® has a slight advantage. Additionally, Aflas® has a slight advantage when considering wear resistance. Also, Aflas® has a significant advantage when comparing heat stability. Furthermore, Polyurethane has a significant advantage when comparing short term resilience. Finally, Aflas® has a slight advantage when evaluating differences in permeation resilience. Both materials are resistant to ozone and brake fluids, with Polyurethane having specific resistences to common fuels, mineral oils, greases, aliphatic hydrocarbons, chlorinated hydrocarbons, aging, weathering and sunlight, silicone oils, hydraulic fluids, water, oxygen, tear, silicone greases, some petroleum oils and some hydrocarbon fuels. Aflas® has specific resistence to bases, steam, 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 |
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Marco Compound Number | Datasheet | Hardness (Shore A) | Color | Low Temp | High Temp | Features | |
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Compound: L1000 | Datasheet: | Hardness: 80 | Color: Black | Low 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) | |
Compound: L1003 | Datasheet: | Hardness: 90 | Color: Black | Low 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 applications | |
Compound: L1009 | Datasheet: | Hardness: 90 | Color: Black | Low 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 oilfield | |
Compound: L1011 | Datasheet: | Hardness: 80 | Color: Black | Low 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. | |
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 | |
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 | |
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 | |
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 |
Temperature Range Comparison |
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Box: Base Material Family Range
Whiskers: Specialty Compounds
General Information | ||
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Full Name | Polyurethane: Polyurethane (PU, TPU) | Aflas®: Aflas® (TFE/P, FEPM) |
Short Name | Polyurethane: Polyurethane | Aflas®: Aflas® |
Common Names | Polyurethane: Urethane, AU, EU, PU | Aflas®: Aflas, TFE/P, FEPM |
Mechanical Properties |
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Specialty Resistances | ||
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Brake Fluids | Brake Fluids | |
Ozone | Ozone | |
Some Hydrocarbon Fuels | Steam <400ºF | |
Some Petroleum Oils | Most Acids | |
Silicone Greases | Skydrol Fluids | |
Tear | Low Molecular Weight Ethers | |
Oxygen | Low Molecular Weight Esters | |
Water | Vacuum | |
Hydraulic Fluids | Di-ester Lubricants | |
Silicone Oils | Halogenated Hydrocarbons | |
Weathering And Sunlight | Ammonia | |
Aging | Amines | |
Chlorinated Hydrocarbons | Acetone | |
Aliphatic Hydrocarbons | Petroleum Oils | |
Greases | Strong Acids | |
Mineral Oils | Gamma-ray Radiation | |
Common Fuels | Hydrogen Sulfide (H2S) | |
Highly Reactive Inorganic Chemicals | ||
Highly Reactive Organic Chemicals | ||
Solvents | ||
Hot Amines | ||
Steam | ||
Bases |
Specialty Resistances | |
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Polyurethane | Some Hydrocarbon Fuels Some Petroleum Oils Silicone Greases Tear Oxygen Water Hydraulic Fluids Silicone Oils Weathering And Sunlight Aging Chlorinated Hydrocarbons Aliphatic Hydrocarbons Greases Mineral Oils Common Fuels |
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 Steam Bases |
Brands | ||
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Vibrathane® | ||
Millathane® | ||
Adiprene® |
Brands | |
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Polyurethane | Vibrathane® Millathane® Adiprene® |
Aflas® |
Limitations | ||
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Ketones | Ketones | |
Hot Water | Carbon Tetrachloride | |
Alcohols | Aromatic Fuels | |
Alkalis | Organic Refrigerants | |
Ethers | Chlorinated Hydrocarbons | |
Glycols | ||
Esters | ||
Amines | ||
Steam | ||
Acids |
Limitations | |
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Polyurethane | Hot Water Alcohols Alkalis Ethers Glycols Esters Amines Steam Acids |
Aflas® | Carbon Tetrachloride Aromatic Fuels Organic Refrigerants Chlorinated Hydrocarbons |