Fluorosilicone vs Aflas® for O-Rings and Seals
Fluorosilicone (FVMQ, FSIL) | Aflas® (TFE/P, FEPM) |
Description | Both materials are well suited for use in the -10 to 180°C range. Fluorosilicone 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, Fluorosilicone has a slight advantage. The differences in compression set resistence show that both materials are equally Fair. Additionally, both materials are equally Fair when considering wear resistance. Also, both materials are equally poor when comparing heat stability. Furthermore, both materials are equally Fair when comparing short term resilience. Finally, Aflas® has a significant advantage when evaluating differences in permeation resilience. Both materials are resistant to ozone and ammonia, with Fluorosilicone having specific resistences to compression set, common fuels, vegetable oils, aromatic hydrocarbons, chlorinated hydrocarbons, aging, weathering and sunlight, oxidizing chemicals, animal oils, chlorinated solvents, diluted alkalies, diester oils, aliphatic fluorocarbons, aromatic fluorocarbons, silicone oils, toluene, benzene, jet fuels, phosphate esters, dry heat, wide temperature range, some acids and some petroleum oils. 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, brake fluids, acetone, amines, 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 | Datasheet | Hardness (Shore A) | Color | Low Temp | High Temp | Features | |
|---|---|---|---|---|---|---|---|
| Compound: F1001 | Datasheet:  | Hardness: 70 | Color: Blue | Low 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: F1002 | Datasheet: | Hardness: 75 | Color: Blue | Low 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: F1003 | Datasheet: | Hardness: 60 | Color: Blue | Low 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: F1006 | Datasheet: | Hardness: 40 | Color: Blue | Low Temp: -100 °F (-75 °C) | High Temp: 350 °F (180 °C) | Description: Jet fuel resistance | |
| 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. |
| Temperature Range Comparison |
|---|
Box: Base Material Family Range
Whiskers: Specialty Compounds
| General Information | ||
|---|---|---|
Full Name | Fluorosilicone: Fluorosilicone (FVMQ, FSIL) | Aflas®: Aflas® (TFE/P, FEPM) |
Short Name | Fluorosilicone: Fluorosilicone | Aflas®: Aflas® |
Common Names | Fluorosilicone: Fluorosilicone, FVMQ | Aflas®: Aflas, TFE/P, FEPM |
| Mechanical Properties |
|---|
| Specialty Resistances | ||
|---|---|---|
Ammonia | Ammonia | |
Ozone | Ozone | |
Some Petroleum Oils | Steam <400ºF | |
Some Acids | Most Acids | |
Wide Temperature Range | Skydrol Fluids | |
Dry Heat | Low Molecular Weight Ethers | |
Phosphate Esters | Low Molecular Weight Esters | |
Jet Fuels | Vacuum | |
Benzene | Di-ester Lubricants | |
Toluene | Halogenated Hydrocarbons | |
Silicone Oils | Amines | |
Aromatic Fluorocarbons | Acetone | |
Aliphatic Fluorocarbons | Brake Fluids | |
Diester Oils | Petroleum Oils | |
Diluted Alkalies | Strong Acids | |
Chlorinated Solvents | Gamma-ray Radiation | |
Animal Oils | Hydrogen Sulfide (H2S) | |
Oxidizing Chemicals | Highly Reactive Inorganic Chemicals | |
Weathering And Sunlight | Highly Reactive Organic Chemicals | |
Aging | Solvents | |
Chlorinated Hydrocarbons | Hot Amines | |
Aromatic Hydrocarbons | Steam | |
Vegetable Oils | Bases | |
Common Fuels | ||
Compression Set |
| Specialty Resistances | |
|---|---|
| Fluorosilicone | Some Petroleum Oils Some Acids Wide Temperature Range Dry Heat Phosphate Esters Jet Fuels Benzene Toluene Silicone Oils Aromatic Fluorocarbons Aliphatic Fluorocarbons Diester Oils Diluted Alkalies Chlorinated Solvents Animal Oils Oxidizing Chemicals Weathering And Sunlight Aging Chlorinated Hydrocarbons Aromatic Hydrocarbons Vegetable Oils Common Fuels Compression Set |
| Aflas® | Steam <400ºF Most Acids Skydrol Fluids Low Molecular Weight Ethers Low Molecular Weight Esters Vacuum Di-ester Lubricants Halogenated Hydrocarbons Amines Acetone Brake Fluids Petroleum Oils Strong Acids Gamma-ray Radiation Hydrogen Sulfide (H2S) Highly Reactive Inorganic Chemicals Highly Reactive Organic Chemicals Solvents Hot Amines Steam Bases |
| Brands | ||
|---|---|---|
Silastic® |
| Brands | |
|---|---|
| Fluorosilicone | Silastic® |
| Aflas® |
| Limitations | ||
|---|---|---|
Ketones | Ketones | |
Phosphate-ester Bases | Carbon Tetrachloride | |
Adelhydes | Aromatic Fuels | |
Hydrazine | Organic Refrigerants | |
Dynamic Applications | Chlorinated Hydrocarbons | |
Amines | ||
Brake Fluids |
| Limitations | |
|---|---|
| Fluorosilicone | Phosphate-ester Bases Adelhydes Hydrazine Dynamic Applications Amines Brake Fluids |
| Aflas® | Carbon Tetrachloride Aromatic Fuels Organic Refrigerants Chlorinated Hydrocarbons |
