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Tip: Materials Chart for Oil Seals

Some of the most common materials used for oil seals are nitrile, highly saturated nitrile, Viton®, FEP, silicone and polyacrylate.

 Materials & Temperature

 Applications

 Use With These Fluids

Simriz®
-10 C to +305 C Compound Specific
Simriz® oil seals are molded of an elastomer that has the broadest chemical resistance of any elastomeric material. They combine all the resilience and sealing force of an elastomer with a chemical resistance approaching that of FEP. most chemicals Aflas®
-10 C to +204 C Compound Specific
Aflas® oil seals are made from a unique fluoroelastomer that is resistant to petroleum oils, steam, hydrogen sulfide and amine corrosion inhibitors. petroleum oils, H2S, steam Carboxilated Nitrile
-54°C to 135°C Nitrile oil seals are made from a compound that tolerates low temperatures and has excellent abrasion resistance. petroleum oils, water FKM Fluorocarbon
-40 C to +204 C Compound Specific FKM Fluorocarbon oil seals feature excellent resistance to petroleum products and solvents. They have good high temperature and low compression set characteristics. They are suited for use with wide chemical exposure situations and for hard vacuum service. petroleum oils, gasoline, transmission fluid Fluorosilicone
-56°C to 204°C A fluorosilicone oil seal combines the good high and low temperature stability of silicone with the fuel, oil, and solvent resistance of fluorocarbon. This oil seal is resistant to petroleum oils and gasoline. petroleum oils, gasoline Highly Saturated Nitrile (HSN, HNBR)
-26°C to 160°C Oil seals made from highly saturated nitrile have excellent resistance to petroleum oils and sour gas. Because of the extended temperature range of highly saturated nitrile, it is becoming a preferred compound in the oil patch. petroleum oils, H2S, CO2 Nitrile (Buna-N)
-40°C to 135°C
Nitrile (Low-Temp)
-65°C to 120°C Nitrile is presently the seal industry's most widely used elastomer. Nitrile oil seals combine excellent resistance to petroleum based oils and fuels, silicone greases, hydraulic fluids, water and alcohols. Nitrile has a good balance of working properties such as low compression set, high tensile strength, high abrasion resistance, combined with a low cost. petroleum oils,
water, hydraulic oils Polyurethane
-40°C to 105°C Polyurethane is an excellent material with high abrasion resistance characteristics and high tensile strength. Polyurethane oil seals are used in high pressure hydraulic systems where highly stressed parts are subject to wear. These seals are resistant to petroleum oils and hydraulic oils. petroleum oils,
hydraulic oils FEP
-20°C to 204°C FEP is a tough, chemically inert polymer possessing an incredible working range. Oil seals from this material are for static and slow intermittent dynamic situations. FEP is hampered by a poor memory at low temperature. most chemicals Polyacrylate
-20°C to 170°C Polyacrylate has better heat resistance than Nitrile. It works well in high surface speed oil seals. petroleum oils, Freon Silicone
-60°C to 200°C Silicone oil seals have a high lubricant absorbency which minimizes friction and wear. petroleum oils, some acids

Data is presented for use only as a general guide and should not be the basis for design decisions. If you are designing oil seals and need help choosing the right material, just give us a call.

Next tip: Oil Seal Basics.

 

 

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What are the best materials for sealing?

There are many different materials that can be used for sealing. They all have their own pros and cons. You should take into account the requirements of the application, the temperature range, the chemical resistance, and other factors in order to decide which material is best for each situation.

Types Of Sealing Material

One of the most common materials is rubber. It has good chemical resistance and is compatible with many different types of liquids. However, it can be difficult to work with because it requires vulcanization in order to make it soft enough to seal something.

Obviously, the first choice of people is a rubber-based sealant. Rubber-based sealants are inexpensive and easy to find. They have a long shelf life and can be used for sealing many types of engineering plastics. However, they do not offer the best protection from corrosion or weathering.

Silicone is another popular material for sealing applications because you can use it without vulcanizing it first. It also has good chemical resistance but it doesn’t work well at high temperatures or in applications where there is a lot of vibration because silicone absorbs energy very

Silicone-based sealant which offers more protection from corrosion and weathering than rubber-based sealants but it costs more and is harder to find.

Finally, there are two types of epoxy-based sealants that provide excellent protection from corrosion and weathering – epoxy resin-based and epoxy urethane-based materials. Epoxy resin type materials are cheaper.

Process of Sealing

Sealing is a process that is used to prevent leakage of fluid from a container. There are many materials that can be used for sealing, but some of the most common ones are engineering plastics. They have been used for sealing because they have good chemical resistance and mechanical properties.

Engineering plastics are polymers that have been created with the intention of being used as an engineering material. The materials are made from petroleum, natural gas, or coal and they offer various advantages over other types of polymers. One of the main advantages is their durability and resistance to chemicals which makes them perfect for sealing purposes.

The best seal material is a material with good chemical resistance, good thermal resistance, and good mechanical strength. Engineering plastics are known for having all these properties, making them the perfect choice for sealing applications.

Engineering Plastics : Best Sealant

The best materials for sealing are engineering plastics. They are strong, durable, and they don’t corrode when they come in contact with water.

There are many materials that can be used for sealing. The best material for sealing is one that is not only strong but also flexible and lightweight.

Metals are often used as sealants because they are strong and durable, but they have a higher density than plastics which makes them less flexible.

Plastic sealants are usually chosen because of their low density and flexibility, but they have a lower tensile strength than metals which makes them more prone to damage.