Regan Brown
Gaskets are crucial for sealing petroleum-based fuels, and the specific material used depends on the fluid or lubrication used in a machine or engine. Diesel is a difficult fluid to seal, and choosing the wrong material can lead to flammable leaks. Nitrile rubber, also known as NBR or Buna-N, is a popular choice for gasket material for diesel fuel due to its excellent resistance to gasoline, oils, and solvents. Other gasket materials, such as FKM/Viton®, PTFE, and EPDM rubber, are also available but may not be chemically compatible with diesel. The selection of gasket material depends on factors such as temperature limitations, cost, and compatibility with fuel injectors and other fuel system components.
| Characteristics | Values |
|---|---|
| Material | Nitrile rubber (also called NBR or Buna-N) |
| Properties | Resistant to oils, grease, gasoline, and other fluids; remains compressible under heavy pressure; high resilience and wear resistance; good for resisting acids and bases without strong oxidizing effects |
| Temperature range | +275°F (some sources say +250˚F or up to +275°F) to -40°F |
| Alternative materials | FKM/Viton®, PTFE, Neoprene, EPDM rubber, Silicon, Hylomar Blue sealant |
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What You'll Learn
Nitrile rubber
In addition to its fuel-resistant properties, nitrile rubber is also known for its outstanding chemical resistance to solvents and gasoline. It has good resilience in extreme temperatures and permeability to gases. Nitrile rubber is available in various grades, including commercial, mid-grade, and premium, each offering different levels of oil resistance and price points. Nitrile rubber can also be custom-cut to specific requirements, making it a versatile and cost-effective choice for gasket applications.
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FKM/Viton
When choosing a gasket material for diesel fuel, it is important to consider the specific application and the types of fluids or lubricants involved. Diesel is a difficult fluid to seal, and the wrong material choice can lead to flammable liquid leaks. FKM/Viton® is an excellent choice for high-temperature applications, but it is important to note that it is more expensive than some alternatives, such as nitrile rubber.
Nitrile rubber, also known as NBR or Buna-N, is a cost-effective alternative to FKM/Viton® for diesel fuel gasket applications. It has similar fuel resistance properties and can be used in a range of sheet thicknesses. However, nitrile rubber has a lower upper temperature limit than FKM/Viton®.
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$9.89
PTFE
While PTFE can be used as a thread lubricant and sealant for diesel fuel fittings, some people advise against its use in fuel systems. There is a risk of it becoming detached and causing blockages or making the joint too slippery. In addition, diesel can affect or dissolve PTFE, and it lacks the compressibility and elastic recovery of other gasket materials like nitrile rubber or Viton.
However, PTFE does have a very wide working temperature range and readily conforms to uneven surfaces. It is also important to note that the specific material used for gaskets depends on the application and the fluid or lubrication used in a machine or engine. For example, nitrile rubber is commonly used for sealing diesel fuel due to its excellent resistance to gasoline, oil, fuels, solvents, and hydraulic fluids. It also has a high temperature range and is cost-effective.
In summary, while PTFE can be used with diesel fuel and has some advantages, such as its wide working temperature range, there are also some concerns about its effectiveness and potential issues with blockages or leaks. Other gasket materials, such as nitrile rubber, may be more suitable for diesel fuel applications.
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Neoprene
While Neoprene is a versatile and durable gasket material, it may not be the best choice for diesel fuel applications. Neoprene tends to swell more in the presence of diesel fuel compared to other gasket materials like nitrile rubber. Nitrile rubber, also known as Buna-N, is the first choice for almost every fuel application, including diesel. It has excellent resistance to gasoline, oils, solvents, and mineral and vegetable oils. Nitrile rubber also has a broader range of resistance to aromatic hydrocarbons compared to Neoprene.
In summary, while Neoprene is a versatile and durable gasket material with excellent resistance to chemicals, oils, and water, it may not be the best choice for diesel fuel due to its tendency to swell. For diesel fuel applications, nitrile rubber is a more suitable option.
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EPDM rubber roofing
Nitrile rubber, also known as Buna-N or NBR, is the best gasket material for diesel fuel and other petroleum-based fuels. This is because diesel and other liquid fuels contain hydrocarbons, which cause many materials to swell, either by causing a chemical reaction, acting as a solvent, or being absorbed by the material. Nitrile rubber is resistant to these effects and can withstand temperatures ranging from -40°F to +275°F. Other gasket materials that are resistant to diesel fuel include FKM/Viton® and PTFE, although these are less elastic and more expensive.
EPDM (ethylene propylene diene terpolymer) is a synthetic rubber roofing membrane that has been used in the roofing industry for over 40 years. It is made from ethylene and propylene, which are derived from oil and natural gas, and it comes in black, grey, and white. EPDM is available in a variety of widths and thicknesses and can be installed in several ways, including full adhesion, mechanical attachment, or ballasting, with seams sealed using liquid adhesives or tape. It is known for its durability and has gained industry-wide respect as a sustainable, long-lasting roofing solution.
The flexibility of EPDM roofing membrane allows it to be used in a range of applications. It can be purchased in sheets up to 50 feet wide and 100 feet long, eliminating the need for seams in most cases. This makes it particularly suitable for low-slope roofing, which is common in commercial buildings. The EPDM Roofing Association (ERA) represents manufacturers and suppliers in the industry, providing technical and research support, dependable roofing solutions, and promoting the benefits of EPDM roofing materials.
The versatility and durability of EPDM have made it a popular choice among architects, roof consultants, and contractors for new construction and replacement roofing projects. Its ability to withstand the test of time while maintaining sustainable performance has solidified its position as a trusted roofing material worldwide. The support provided by the ERA and the availability of technical expertise further contribute to the appeal of EPDM roofing solutions.
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Frequently asked questions
Nitrile rubber, also known as Buna-N, is a gasket material that is suitable for diesel fuel. Nitrile rubber is a closed-cell sponge rubber material that provides excellent gasket material for sealing applications that require resistance to diesel fuel.
Nitrile rubber can maintain its properties in commercial or industrial applications where temperatures range from -40°F to +275°F.
Yes, FKM/Viton® is an alternative gasket material that is fuel-resistant and remains flexible at temperatures up to 400°F. PTFE is another alternative that has a very wide working temperature range but lacks the compressibility and elastic recovery of nitrile or Viton.
Nitrile rubber sheets can be purchased from auto parts stores or online retailers like Amazon.
