E-mail: sales@china-oilseals.com
Tel.: +86 139 3371 7202
E-mail: sales@china-oilseals.com
Tel.: +86 139 3371 7202
Oil seals, also known as rotary shaft seals, are used to prevent the leakage of lubricants, gases, and other fluids in machinery and equipment. They are typically made from elastomeric materials such as nitrile rubber or Viton® and come in a variety of sizes to fit different shaft diameters and housing bores.
China oil seal sizes can vary depending on the specific application and requirements of the machinery or equipment they are used in. However, here are some common oil seal sizes used in China:
| Oil Seal Size (ID x OD x Width) | Shaft Diameter Range | Housing Bore Diameter Range | Typical Applications |
|---|---|---|---|
| 10x20x5mm | 6-8mm | 16-18mm | Small motors, pumps, compressors |
| 12x22x5mm | 8-10mm | 18-20mm | Small motors, pumps, compressors |
| 15x24x5mm | 10-12mm | 20-22mm | Small motors, pumps, compressors |
| 17x30x7mm | 12-15mm | 26-28mm | Automotive engines, transmissions |
| 20x30x7mm | 14-18mm | 26-28mm | Automotive engines, transmissions, hydraulic systems |
| 22x35x7mm | 16-20mm | 30-32mm | Automotive engines, transmissions, hydraulic systems |
| 25x38x7mm | 18-22mm | 32-35mm | Automotive engines, transmissions, hydraulic systems, pumps |
| 30x42x7mm | 22-26mm | 36-40mm | Industrial machinery, pumps |
| 35x47x7mm | 26-30mm | 42-45mm | Industrial machinery, pumps |
| 40x52x7mm | 30-35mm | 46-50mm | Industrial machinery, pumps |
| 45x58x7mm | 35-40mm | 52-55mm | Industrial machinery, pumps |
| 50x65x7mm | 40-45mm | 58-62mm | Industrial machinery, pumps |
①It's important to note that these are general guidelines and may vary depending on the specific application and manufacturer. It's always recommended to consult the manufacturer's specifications or a technical expert to ensure the correct oil seal size is selected for your specific needs.Xingtai Honglei Seal Manufacturing Co., Ltd. registered trademark "KDIK" is a senior manufacturer for global markets. We are a professional oil seal factory with more than 18 years of experience.
②It's important to note that these sizes are not exclusive to China and are commonly used worldwide.
When selecting an oil seal, it's important to consider factors such as the material, temperature range, pressure rating, and chemical compatibility to ensure the proper performance and longevity of the seal.
1.Shaft diameter - This is the diameter of the rotating shaft that the oil seal will be mounted on. It is important to select an oil seal with an inside diameter (ID) that matches the shaft diameter to ensure a proper fit and prevent leakage.
2.Housing bore diameter - This is the diameter of the housing bore where the oil seal will be installed. It is important to select an oil seal with an outside diameter (OD) that matches the housing bore diameter to ensure a proper fit and prevent leakage.
3.Width - This is the thickness of the oil seal, measured from the sealing lip to the back of the seal. It is important to select an oil seal with a width that matches the space available in the housing bore to ensure a proper fit and prevent leakage.
For example, if you have a shaft with a diameter of 25mm and a housing bore with a diameter of 38mm, you would want to select an oil seal with an inside diameter of 25mm, an outside diameter of 38mm, and a width that matches the space available in the housing bore.
③It's important to note that oil seal sizes can vary depending on the manufacturer and application, so it's always a good idea to consult the manufacturer's specifications or a technical expert to ensure you are selecting the correct size for your specific needs.
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Rotary seals: These are used in rotating machinery to prevent leakage of oil or other fluids.
Shaft seals: These are used to seal the interface between a rotating shaft and the housing in which it rotates.
Lip seals: These are a type of shaft seal that uses a flexible lip to create a barrier against fluid leakage.
Mechanical seals: These are a type of seal that uses a rotating element to create a barrier against fluid leakage.
Oil gaskets: These are used to seal the interface between two stationary surfaces, such as the engine block and cylinder head in an internal combustion engine.
Bearing seals: These are used to prevent the escape of lubricant from bearings, which can cause premature wear and failure.
O-rings: These are a type of seal that uses a circular cross-section to create a barrier against fluid leakage.
Radial shaft seals: These are a type of seal that uses a spring-loaded lip to maintain contact with the rotating shaft.
V-ring seals: These are a type of seal that uses a flexible V-shaped element to create a barrier against fluid leakage.
PTFE seals: These are a type of seal made from polytetrafluoroethylene, a material known for its chemical resistance and low friction properties.
Hydraulic seals: These are used in hydraulic systems to prevent fluid from leaking out of the system.
Oilite bearings: These are a type of bearing made from sintered bronze that is impregnated with oil, which provides self-lubrication.
Oil filters: These are used to remove contaminants from engine oil, which can cause damage to engine components.
Valve stem seals: These are used to prevent oil from entering the combustion chamber of an internal combustion engine through the valve stems.
Rear main seals: These are used to prevent oil from leaking out of the back of the engine, where the crankshaft exits the engine block.
Front crankshaft seals: These are used to prevent oil from leaking out of the front of the engine, where the crankshaft drives the accessory belts.
Crankshaft seals: These are used to prevent oil from leaking out of the engine crankcase around the crankshaft.
Camshaft seals: These are used to prevent oil from leaking out of the engine camshaft around the bearing surfaces.
Transmission seals: These are used to prevent fluid from leaking out of the transmission, which can cause damage and failure.
Differential seals: These are used to prevent fluid from leaking out of the differential, which can cause damage and failure.
JCB Oil Seal 