High-Pressure O-Rings
High-pressure O-rings are rubber rings with an "O" cross-section designed for applications where high pressure is present.
But what exactly are O-rings? Feel free to explore our next Guide!
How do O-rings behave under pressure?
O-ring seals are one of the most commonly used sealing solutions in the industry. They create a tight seal between two elements, preventing unwanted leakage of gases or liquids and the entry of contaminants into the system. Proper selection of O-rings and installation is crucial in maintaining reliable sealing in high-pressure applications.
The O-ring is placed in a special groove, where it is compressed between two or more elements that are to be connected or pressed together, creating a seal. The greater the internal pressure exerted on this connection, the more the O-ring with an "O" cross-section deforms in the groove. Under pressure, it moves in the groove towards lower pressure, pressing more firmly against the inner and outer walls of the seal created between the two elements, forming a tighter seal. However, it is essential not to overload the O-ring more than it can withstand, as excessive deformation can lead to leakage and the escape of the working medium.
It is important to remember that in high-pressure applications, O-ring seals require the use of harder materials. The use of a rubber compound with low hardness can cause the O-ring to be pushed out of the seal groove, leading to damage and leaks. To ensure that the high-pressure O-ring can fulfill its sealing function and operate optimally, material compatibility, hardness, groove dimensions, the use of a backup ring, and the working environment and conditions must be taken into account.
Types of High-Pressure O-rings
High-pressure O-rings are available in various types of rubber compounds. These include seals made from:
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NBR (Nitrile Butadiene Rubber or Nitrile Rubber) - excellent resistance to greases, oils, fuels, and chemicals
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FKM / FPM / Viton ® (Fluoroelastomer or Fluorocarbon Rubber) - high tolerance to mineral oils, silicone greases, animal and vegetable fats
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EPDM (Ethylene Propylene Diene Monomer Rubber) - resistant to chemicals, steam, solvents, and acids
O-rings and Hardness
- 90 NBR ShA or NBR 90 ShA
- 80 NBR ShA or NBR 80 ShA
- 90 FKM ShA or FKM 90 ShA
- 80 FKM ShA or FKM 80 ShA
- 90 FPM ShA or FPM 90 ShA
- 80 FPM ShA or FPM 80 ShA
- 90 FPM ShA or FPM 90 ShA
- 80 FPM ShA or FPM 80 ShA
- 90 EPDM ShA or EPDM 90 ShA
- 80 EPDM ShA or EPDM 80 ShA
High-Pressure Rotary Seals
Here is an example of a high-pressure rotary seal:
Explore our wide range of technical seals available at POWER Rubber:
Click here -> Technical Seals <-click here
You will find essential technical data, product descriptions, and customer reviews there.
High-Pressure O-rings - Applications
As we know, high-pressure O-rings come in various hardness levels, are made of different materials, and are available in a wide range of sizes. They are used in a variety of industries, including:
- technical industry
- automotive industry
- pharmaceutical industry
- refinery industry
- fuel industry
- heavy-duty vehicles
- excavators and cranes
- high-pressure equipment (e.g., seal for a pressure washer hose and drum connector)
High-Pressure O-rings - Product Available at Power Rubber
At Power Rubber, we offer high-quality rubber products. We specialize in the production of O-rings and seals made from various materials depending on pressure and temperature requirements.
Need more information?
Please direct all inquiries to the following phone numbers: +48 222 924 024 or +48 505 16 03 03, or via email (power|powerrubber.com| |Power|PowerRubber.com), or through our contact form.
