Frequently Asked Questions for O-Rings
What is the most common O-ring failure?
The most common cause of O-ring failure is abrasion. This can happen from improper finishing of the surface in contact with the O-ring. An overly abrasive or overly smooth surface will struggle to hold lubricant, preventing the O-ring from adhering.
How do I measure my O-ring?
O-rings are measured using three standard dimensions: inner diameter, outer diameter, and cross-section. For the most accurate measurements, use a vernier caliper to measure these dimensions.
How do you lubricate an O-ring?
Lubrication is necessary to prevent damage to the O-ring during installation and use. To lubricate an O-ring, apply a small amount of lubricant to your fingers or a brush, and rub it around the surface of the O-ring. Alternatively, you can dip the O-ring into a container of lubricant. Whichever method you choose, be sure to fully cover the O-ring for proper lubrication.
Does the color of an O-ring matter?
Yes! O-rings are available in many colors for a variety of reasons. Different O-ring colors can represent the material of the O-ring, its durometer, temperature and chemical resistance, or branding.
Do O-rings have to be the exact size?
Yes. An O-ring’s performance relies on its dimensions. An O-ring with incorrect dimensions, whether too big or too small, will not fit within the desired groove and therefore will not create a tight seal.
How do I know when to replace my O-rings?
O-rings don’t last forever. If you observe cracks, nicks, or an increase in leaks, it may be time to replace your O-rings. What is the lifespan of an O-ring? The lifespan of an O-ring will depend on its material, usage, and environment. Because of this, there is no specific lifespan for any given O-ring. However, the average lifespans of O-rings typically range from 10 to 20 years.
What is the difference between gaskets and O-rings?
While both gaskets and O-rings are used for sealing purposes, they have different constructions and are used in various applications. O-rings have rounded edges, are typically made from flexible elastomers, and are used in several different applications. Gaskets are flat, made out of a wide range of materials, and are ideal for low-pressure.
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