EC Series End Cover Oil Seal Hydraulic Cylinder Seals NBR Rubber KSK Oil Seal End Cover

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xProduct Name | EC/VK Cover Seal | Product Material | NBR |
---|---|---|---|
Product Color | Black | Working Medium | Mineral Oil, Synthetic Oil, Etc. |
Operating Temperature | -40°C To +100°C | Material Properties | Oil-resistant 、waterproof |
Product Usage | Primarily Used For Gearboxes And Reducer Housings To Prevent Dust And Contaminants From Entering Moving Parts. | Product Specifications | Specifications Are Complete, And Customization Is Supported. |
Built-in metal frame design • Extended service life • Simplified maintenance


The EC Series End Cover Oil Seal is a precision-engineered sealing solution designed to protect bearings and internal components from contaminant ingress and lubricant leakage in rotary equipment. Featuring an advanced double-lip design with integrated dust exclusion and primary sealing functions, it ensures reliable performance in industrial machinery, automotive systems, and heavy-duty applications.
- Dual-lip protection: The primary lip maintains lubrication; the secondary lip expels dust, dirt, and moisture.
- Premium raw materials: Made from NBR material, it is oil-resistant, waterproof, and dustproof.
- Easy installation: Designed with a precision-machined thick metal skeleton for quick and safe assembly.
- Temperature resistance: Performs stably within a range of -40°C to +100°C.
- Cost-effective: Reduces downtime and maintenance costs by extending component lifespan.
Parameter | Standard Range |
---|---|
Shaft Diameter | 24mm-215mm |
Temperature | -40°C to +100°C |
Materials | NBR (Standard) |
working medium | mineral oil, synthetic oil, etc. |
characteristics | oil-resistant and waterproof |


- Industrial Gearboxes: Prevents lubricant leakage and contaminant entry.
- Automotive Transmissions: Ensures long-term sealing reliability.
- Electric Motors: Protects bearings from dust and moisture.
- Agricultural Machinery: Resists abrasive environments and harsh weather.
- Pumps & Compressors: Maintains sealing under variable pressure conditions.
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Optimized lip geometry:
◦ Computer simulation design ensures low friction and minimal heat generation.
◦ The main lip, spring-loaded, maintains consistent sealing force.
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Durable construction:
◦ Equipped with reinforced metal skeleton.
◦ Precisely molded elastomer with excellent wear resistance.