Crankshaft Oil Seal Rotary Shaft Oil Seals Industrial Machinery Oil Seals
How to choose the right size of TB type
1. Measure relevant dimensions:
Measurement of shaft diameter: Use a tool to measure the diameter of the shaft accurately with the oil seal, take the average value of several positions to ensure accuracy, this dimension corresponds to the inner diameter of TB type oil seal.
Measurement of mounting holes:
Measure the diameter of the holes in the mounting part of the oil seal, which corresponds to the outer diameter of the TB type oil seal. Pay attention to the accuracy of measurement, the deviation of mounting hole size will affect the installation and sealing effect of the oil seal.
2. Consider the working conditions
Temperature:
If the working temperature is between - 50℃-120℃, choose TB type oil seal made of NBR; if the temperature is between - 50℃-300℃, fluorine rubber (FKM) is more suitable.
Pressure:
When the pressure is less than 0.03MPa, ordinary TB type oil seal can be chosen; between 0.03MPa-1MPa, TB type oil seal with better high-pressure performance is required; if the pressure is more than 1MPa, TB type oil seal with special design or material that can withstand higher pressure should be chosen.
3. Focus on sealing needs
Sealing medium:
To seal general lubricating oil, hydraulic oil, etc., conventional TB type oil seal made of nitrile rubber is sufficient; if sealing strong corrosive chemical medium, TB type oil seal made of good corrosion resistance should be selected.
Sealing precision:
For the scenes that require high sealing precision and do not allow trace leakage, TB type oil seals with double lips and appropriate spring tension can be selected to provide better sealing effect.
Features of Oil Seal Materials
| MATERIAL | FEATURES | Temperature |
| Nitrile Rubbr (NBR) | Excellent wear resistance Excellent aging resistance Excellent Oil resistance Good water resistance Fair ozone resistance Fair acid resistance | -40~120°C |
| Fluorinated Rubber (FKM) | Excellent wear resistance Excellent aging resistance Excellent Oil resistance Good water resistance Excellent ozone resistance Excellent acid resistance | -26~250°C |
| Silicone Rubber | Poor wear resistance Excellent aging resistance Poor Oil resistance Good water resistance Excellent ozone resistance Fair acid resistance | -60~225°C |
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About Our Company
Hebei Xiangte Seal Technology Co., Ltd. is located in Hebei Province, China, with rich experience in the research and development, production and sales of seals. The company is committed to research and development and solve the problem of sealing and shock absorption of high-end products. Focusing on FKM, NBR special rubber seals and high-performance polyurethane products production and research and development, our company has developed special NBR gray rubber, FKM rubber after many years of experimentation and research , and its resistance to high and low temperatures and a variety of physical properties of the index is far more than the ordinary NBR rubber, the performance is stable and reliable. 
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Crankshaft Oil Seal Rotary Shaft Oil Seals Industrial Machinery Oil Seals Images
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