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Temperature range: The nitrile O-ring temperature range is between -65 degrees Fahrenheit and 300 degrees Fahrenheit. As o rings are made from synthetic rubbers such as Neoprene, nitrile, and EPDM, you can use petroleum grease to perfectly lubricate the o ring. Determine the hardness: The hardness of the o-ring determines its ability to resist extrusion and deformation. Hardness is measured in a durometer and can range from 30-90. For example, an o-ring with a durometer reading of 60 is softer than 70, while 90 is stiff compared to a reading of 70.
Suited for: General purpose seals, such as petroleum oils, water, and some hydraulic fluids. Buna-N is also resistant to tears and abrasive treatment. Avoid: Buna-N can have problems with automotive brake fluid, ketones, phosphate ester hydraulic fluids, and nitro and halogenated hydrocarbons. While it is ozone and weather-resistant, this resistance is not infallible but can be supported through compounding. Avoid: Fluorocarbon is not recommended for Skydrol, amines, esters, and ethers with low molecular weight and hot hydrofluoric acids. Suited for: Neoprene can seal refrigerants in refrigeration and air conditioner units, as well as petroleum oils and mild acid resistance silicate ester lubricants. Functions within a temperature range of -60 °C to 225 °C (-76 - 437 °F), while specifically engineered types can endure temperatures spanning from -100 °C to 300 °C (-148 - 572 °F)
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Grease and oil lubricants are used on different applications and products, depending on what is required. Did You Know? Household leaks waste an average of 10,000 gallons of water every year. Different Types Of Plumbing O Rings For example, we tend to recommend grease lubricants on parts operating at low speed and at relatively stable temperatures.
O rings are also used in many other applications, such as in automotive and mechanical engineering. They have many benefits. In most cases, plumbers will use plumber’s tape, putty, or pipe dope for threaded connections and O rings or a similar rubber gasket for unthreaded connections.Silicone grease and lubricants aren’t just a nice to have for o rings, but they can quite often be a must-have. caption id="attachment_6698" align="aligncenter" width="553"] Static and Dynamic O-Ring Sizes and Groove Dimensions - Image credit: Allied Metrics[/caption] Nitrile (Buna-N)
Avoid: Similar to nitrile, EPR is not perfect for a wide range of applications due to wear and tear issues. Carbon dioxide often presents an issue for many types of o-rings, as softer materials have a tendency to absorb the gas over time and swell up. This can lead to an unreliable seal in the short term, and over time the CO2 will actually cause the o-ring to start to break down from within. We’d advise avoiding silicone sprays where possible as often sprays will only be approximately 5% silicone and have petroleum-based solvent and propellant included to make it a spray.Avoid: Applications requiring good compression and heat resistance would not be suitable for polyurethane. The most common type of O ring is the elastomeric O ring. Elastomeric O rings are made from synthetic rubber elastomer material with excellent resistance that can deform elastically (or stretch) without breaking with an elastomeric seal. This makes them ideal for use in applications where there may be some movement or vibration. However, whatever, and whichever product you decide to use, lubrication will reduce the wear on products as it helps to reduce friction between these moving parts. What to look for in a lubricant
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