How do you choose an O-ring material?

Factors to Consider When Picking O-rings They include but are not limited to operating conditions, chemical compatibility, sealing pressure, temperature, durometer, size, and cost. Depending on the specific situation, you may also look at abrasion, tear, ozone, electrical resistance properties.

What is the most elastic O-ring material?

O-ring Materials for Static and Dynamic Sealing Applications

Buna-Nitrile O-Ring Material: A synthetic rubber with excellent oil resistance and fair to good chemical resistance.
EPDM O-Ring Material: A synthetic rubber providing excellent chemical resistance and heat resistance.

How do you specify an O-ring size?

How to Measure O-Rings

Place the O-ring on a clean, flat, level surface.
Determine the inside diameter by using a ruler to measure from one inner edge to another.
Use a ruler to measure the diameter, from one outer corner of the O-ring to the other outer corner.
Finally, measure the cross-section.

What is NBR O-ring?

Nitrile o-rings, also known as Buna-N o-rings or NBR o-rings, are one of the most common types of o-ring materials because of their low-cost performance in basic water, oils, fuels, and lubricants.

What is the difference between Viton and Buna o rings?

Viton is the choice over Buna for high-temperature applications. Viton seals hold indefinitely at temperatures up to 400°F and can last up to 48 hours at temperatures up to 600°F. Buna is effective to 250°F. Viton offers universal chemical resistance for sealing applications for oils, fuels, and mineral acids.

How do you select O-ring cross section?

Groove Design: O-Ring Seals

Cross-section. Select an O-Ring cross-section size from the available standard sizes.
Clearance.
Check the Clearance.
Calculate the O-Ring groove dimensions.
Groove Width.
Percent Gland Fill.
Calculate the Seal Squeeze.
Select the Seal.

What are Viton o rings used for?

A Viton™ seal is simply a seal manufactured from Viton™. These seals or gaskets are commonly used to seal leaks, valves, pumps and similar. Viton™ o rings are the most common type of seal, which we provide here at NES in a variety of sizes and profiles.

What is the difference between nitrile and Viton o rings?

You’ll find nitrile o rings used in many applications, including where oil resistance is needed or where low temperature functionality is required. As well as resisting oils, petrol and hydrocarbons, Viton™ is resistant to mineral acids, halogenated hydrocarbons and more.

What is the difference between Buna and Viton o rings?

How to choose the best O ring material?

Compare O-Ring Material Use Compatibility Differences O-ring material family chemical compatibility, temperature resistance, and other properties all factor in to o-ring material selection for an application. This popular o-ring material family comparison shows basic rubber material family properties and performance plastic properties.

Which is the best factor for O ring compatibility?

O-Ring Material Compatibility and Chemical Resistance Chart O-ring compatibility is a key factor in o-ring performance. Choosing the right material based on chemical and temperature exposure minimizes costly o-ring failures.

What are the dimensions of O ring grooves?

O-ring Groove Design Guides O-ring groove dimension guidelines for standard o-ring grooves, metric o-ring grooves, JIS o-ring grooves, and other o-ring gland designs. Fluid Compatibility Guide A detailed list of fluids/chemicals with their compatibility ratings for use with the most common O-Ring materials.

What kind of Lube is compatible with O ring?

Find the right o-ring material for your application to maximize performance and reliability. If you need further assistance, contact an application engineer to find the best combination of o-ring compatibility, performance and price. AMINES MIXED (ALLYL, ETHYL, ETC.) ATLANTIC UTRO GEAR-EP LUBE.

How do you choose an O-ring material?