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An O-ring is a circular sealing element made of rubber or elastomer, used to block the passage of liquids or gases between two parts. It fits into a groove and is compressed during assembly to form a tight seal.
How to measure O-rings?
To measure an O-ring, use a caliper to determine the inner diameter (ID), outer diameter (OD), and cross-section (CS). The formula is: OD = ID + 2 × CS. Accurate measurements ensure proper sealing performance.
What are O-rings used for?
O-rings are widely used in hydraulic systems, automotive engines, industrial pumps, and pneumatic tools. They prevent leakage in both static and dynamic applications under pressure, heat, and chemical exposure.
Where to buy O-rings?
You can buy high-quality O-rings directly from manufacturers like Hengoseal.com, which offers a wide range of sizes, materials (NBR, FKM, EPDM, etc.), and supports custom orders with no MOQ.
How do O-rings work?
O-rings work by being compressed inside a groove between two surfaces. When pressure is applied, the O-ring deforms and creates a barrier that blocks the path of fluids or gases, forming a leak-proof seal.
how to shrink o ring?
To shrink an O-ring temporarily, place it in cold water or a freezer for a few minutes. This causes the rubber to contract slightly, which can help during assembly. However, it will return to its original size at room temperature.