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The crankshaft oil seal is a sealing device specially used for crankshaft components in cars, trucks and industrial machinery.
The crankshaft oil seal is a sealing device specially used for crankshaft components in cars, trucks and industrial machinery.

Product
Description

Specification

parameter

Production
Process

type

Application
Scenario

Features

01.

Product
Description

The crankshaft oil seal is a sealing device specially used for crankshaft components in cars, trucks and industrial machinery. Its main function is to prevent the leakage of lubricating oil inside the engine and prevent external pollutants (such as dust, dirt, moisture, etc.) from entering the engine. The crankshaft oil seal is an important part of the engine sealing system, ensuring a good seal between the crankshaft and other components, extending the service life and performance stability of the engine. The oil seal is generally made of high-performance rubber material with excellent high temperature resistance, oil resistance and wear resistance.

02.

Specification

Material NBR (nitrile rubber), FKM (fluororubber), HNBR (hydrogenated nitrile rubber), etc.
Color Black, blue, etc. (customized according to needs)
Size Customized according to different vehicle models, engine and crankshaft specifications
Temperature range -30℃ to +150℃ (high temperature type can reach +200℃)
Temperature resistance Excellent high temperature resistance, suitable for sealing requirements in high temperature environments
Wear resistance Strong wear resistance, suitable for long-term high-speed operation
Customized Design Customized sizes, materials and designs are available depending on engine model and crankshaft characteristics.
03.

parameter

Inner diameter range

Usually from 20mm to 200mm, suitable for different crankshaft specifications

Outer diameter range

Designed according to crankshaft outer diameter and installation position

Thickness range

Common thickness is 5mm to 15mm, customization is supported

Operating temperature

-30℃ to +150℃ (high temperature type can reach +200℃)

Applicable media

Engine oil, lubricating oil, hydraulic oil, etc.

Rotation speed

Suitable for low to medium speed rotation applications, up to 15m/s

Pressure resistance

The pressure resistance is usually between 1MPa and 3MPa. Different pressure resistance performance can be provided according to customer needs.

04.

Production
Process

Metal frame manufacturing

The oil seal frame is made of high-strength metal or reinforced material to ensure the strength and durability of the oil seal.

Rubber molding

The oil seal frame is made of high-strength metal or reinforced material to ensure the strength and durability of the oil seal.

Vulcanization

The vulcanization process enhances the high temperature resistance, wear resistance and aging resistance of rubber, ensuring its stable operation in high temperature and high pressure environments.

Finishing and assembly

The sealing surface of the oil seal is precision machined to ensure the accuracy of the size and the sealing performance.

Quality Inspection

Each batch of oil seals undergoes rigorous testing to ensure that their high temperature resistance, oil resistance, and pressure resistance meet the standards.

Packaging and delivery

The products are cleaned and packaged to ensure their integrity during transportation.

Standard crankshaft oil seal

Suitable for crankshaft seals of general engines, with good sealing effect

High temperature crankshaft oil seal

High temperature resistant materials are selected, suitable for long-term high temperature working environment

Double lip crankshaft oil seal

Designed for corrosion-resistant environments and suitable for complex working conditions

Customized crankshaft oil seal

Provide customized size, material and design according to different engine models

type

06.

Application
Scenario

Automotive Industry

Used for sealing of automobile drive shafts, wheels, differentials and other parts to prevent oil leakage and protect internal systems

Industrial Equipment

Such as the sealing of gear boxes, hydraulic pumps, compressors and other equipment to ensure that lubricating oil does not leak

Engineering Machinery

Such as drive shaft seals for excavators, bulldozers and other equipment to protect transmission systems and bearings

Shipping industry

Used for ship gearbox and transmission shaft seals to retain oil and prevent external pollutants from entering

Agricultural machinery

Sealing systems for equipment such as tractors and harvesters

Mining machinery

Such as the sealing of mining vehicles and mining equipment to ensure the normal operation of the equipment

07.

Features

Strong high temperature resistance

The crankshaft oil seal can work stably in an environment up to +150℃ (high temperature type can reach +200℃)

Excellent sealing performance

Effectively prevents lubricating oil leakage and external pollutants from entering the engine system

Strong wear resistance

Adapt to the high frequency and high speed operation of the engine to ensure long-term use

Strong resistance to aging

Made of advanced rubber material, it has a long service life

Wide adaptability

Applicable to various types of engines and mechanical equipment, with good versatility

Reduce maintenance costs

Highly efficient sealing performance reduces equipment failure rate and maintenance frequency, reducing maintenance costs

After-sales guarantee

1

 / 

7

Service response speed
Technical Support and Guidance
Product Repair and Replacement
Spare Parts Supply
Regular Inspections and Maintenance
Customer Training and Education
Global After-Sales Service Network
We promise to respond quickly within 24 hours after customers submit after-sales service requests. Whether it is product failure, technical consultation or quality issues, customers can get timely support from our team. The after-sales service platform we provide supports 24-hour communication, ensuring that customers can get in touch with us at any time.
We provide comprehensive technical support, including product installation, debugging, operation training, and troubleshooting. Our experienced team offers professional advice and solutions to ensure optimal product performance. For complex issues, we also provide remote diagnostics and on-site support.
For products within the warranty period or those with quality issues, we offer free repair or replacement services. Our repair services include fault diagnosis, part replacement, and system debugging to restore the product's original performance and minimize downtime.
We offer a full range of spare parts to ensure any component damage is promptly addressed. All parts meet factory standards and undergo strict quality testing to guarantee high quality and long-term stability.
We provide scheduled inspections and maintenance services based on customer needs. This includes performance assessments, component checks, seal inspections, and maintenance recommendations to prevent downtime and ensure optimal product performance.
To ensure efficient operation and maintenance, we offer professional training services. The training covers proper product use, daily maintenance, and handling common issues. We also provide regular workshops and online educational resources to help customers improve efficiency and reduce maintenance costs.
We have after-sales service centers in multiple countries and regions to meet the needs of customers worldwide. Our international service network offers local support, efficient logistics, and technical consultation to ensure seamless product integration and timely response globally.

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