Oil Seal Production Process And NNK Technical Advantages

31 Jul.,2025

Oil Seal Production Process And NNK Technical Advantages.As a professional oil seal manufacturer, NNK factory always adheres to high standards, high efficiency and high precision as the core, and is committed to providing global customers with excellent performance, durable and reliable sealing solutions.

 

Oil Seal Production Process And NNK Technical Advantages

Oil seal production process and NNK technical advantages:

As a professional oil seal manufacturer, NNK factory always adheres to high standards, high efficiency and high precision as the core, and is committed to providing global customers with excellent performance, durable and reliable sealing solutions. The following are the main steps in our oil seal production process and NNK's technical advantages in each link:

1. Raw material screening and pretreatment

Technical advantages: high-standard material management system
NNK strictly selects raw materials such as rubber, metal skeletons, springs, etc., gives priority to internationally certified high-performance rubber formulas, and conducts batch testing to ensure that each oil seal has excellent wear resistance, heat resistance, and oil resistance.

2. Mold design and manufacturing

Technical advantages: independent mold research and development and CNC machining center
NNK has independent mold design capabilities, combined with CAD/CAM systems and five-axis CNC precision machining, and mold tolerances are controlled at the micron level, greatly improving product consistency and sealing performance.

Oil Seal Production Process And NNK Technical Advantages

3. Rubber mixing and vulcanization molding

Technical advantages: automated internal mixing system and precision injection molding machine
We are equipped with fully automatic internal mixers and high-precision injection molding equipment, and intelligent control of the mixing process to ensure the stability of rubber properties; the molding process uses multi-cavity molds to improve efficiency while ensuring the tightness and integrity of the oil seal.

4. Metal skeleton processing and assembly

Technical advantages: anti-rust coating and automated assembly line
The metal skeleton undergoes multiple treatments such as degreasing, phosphating, and spraying for anti-rust to improve its corrosion resistance. Automated equipment is used in the assembly process to reduce human errors and achieve precise positioning and consistent assembly.

5. Surface treatment and spring installation

Technical advantages: constant tension control and surface coating optimization
NNK conducts full inspection and screening of spring tension to ensure that each oil seal has the best initial sealing force after installation; the oil seal lip uses special coating technology to reduce wear and friction and improve startup smoothness.

6. Quality inspection and performance testing

Technical advantages: full inspection system + dynamic simulation laboratory
NNK implements full-process quality control, introduces high-precision image size detection system, dynamic pressure resistance and wear resistance test bench, and conducts multiple simulation tests on oil seals such as sealing performance, temperature resistance, and rotation durability.

7. Packaging and logistics management

Technical advantages: clean packaging and intelligent storage system
Finished oil seals are processed in a dust-free packaging room to prevent contamination. The intelligent storage system is used for classification management and rapid delivery to improve delivery efficiency.

Why choose NNK?

-30+ years of professional experience, serving global customers

-Continuous research and development and innovation, and obtained multiple technical patents

-Strictly implement ISO/TS 16949 quality system

-Flexible customization capabilities to meet the needs of various industries (automobiles, machinery, hydraulics, etc.)

NNK is not only a manufacturer of oil seals, but also a promoter of sealing technology. Welcome customers from all walks of life to inquire and cooperate, let us achieve your trust with professional quality!