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Oil seals are mechanical parts that keep oil or grease inside equipment. They come in a range of standardized diameters to suit different uses, from miniscule seals for tiny shafts to enormous seals for massive industrial pumps.
Micro oil seals, under 1/2 inch, are ideal for lightweight machinery like lawnmowers, weed whackers, motorcycles, and go-karts. They seal around minuscule shafts from 1/4 to 5/16 inch in diameter and prevent leakage from engines up to 30 horsepower. Standard oil seal diameters span 5/16 inch up to an enormous 6 inches.
The 1/2 inch, 5/8 inch, 3/4 inch, 1 inch, 1 1/4 inch and 1 1/2 inch diameters are the most versatile and used across a wide range of equipment. For example, 1/2 inch seals seat motorcycles, 3/4 inch benches grinders, 1 inch compressors, and 1 1/2 inch heavy lift equipment.It is very important to choose the correct oil seals by size.
Other factors consider when choosing an oil seal diameter include:
Materials include nitrile rubber, fluorocarbon, silicone, PTFE and high-temperature grades for critical applications. Converting metric and SAE sizing systems uses standard charts.
The proper oil seal, sized precisely for each application, minimizes leakage risk, ensures longevity, and maximizes operational reliability. Understanding available diameters, sealing capabilities, and typical uses provides the knowledge needed to choose ideal oil seal solutions for any need or niche.
With a spectrum of sizes and specialized high-performance seals now available, oil seals can achieve even tighter and longer-lasting seals for a diverse range of demanding applications. Choosing oil seal diameters judiciously aids success in every seal.
If you do not know how to choose the correct size of the seal ring, welcome to consult us.