Who We Are ?

NJK is unique in the oil seal industry in that NJK produces its own oil seal tooling. we have more that 20 years experiences in designing and producing oil seal tooling.

As a

China Rubber Gaskets Manufacturers and Rubber Seal Rings products Suppliers

,NJK Motor Vehicle Fittings(Shanghai)Co.,ltd was set up in 1995.Our Registered capital is $USD 4.4 million,we have 550 people and our factory area is 36600㎡.We produce OEM and ODM on Oil Seal,Rubber Seal Rings, O-ring, V-ring, Rubber Gaskets,Rubber Packing, Tensioner and all kinds of rubber products,used in automobile,motorcycle,ship and marine equipment, Industrial machinery, agricultural machinery,sports machinery;We applied ISO9001:2000 international quality control system certification and certified, obtained the certificate of TS16949 and implemented KPI programs. Our sales Region include China, USA, Europe, Japan, South East Asia and other regions...
Sales Countries
50+
Sale Products
260+
Factory Area
36600
Employees
550

What We Make ?

We produce OEM and ODM on Oil Seal and all kinds of rubber products, our products are mostly used in automobile,motorcycle, Industrial machinery...

Professional Attitude, Security Measurement, Quality Assurance.

Certificate Authentication

We applied ISO9001:2000 international quality control system certification and certified,obtained the certificate of TS16949

Certificate Authentication

We applied ISO9001:2000 international quality control system certification and certified,obtained the certificate of TS16949

Certificate Authentication

We applied ISO9001:2000 international quality control system certification and certified,obtained the certificate of TS16949

Certificate Authentication

We applied ISO9001:2000 international quality control system certification and certified,obtained the certificate of TS16949

Where To Use

Our rubber produces are widely used in automobile,motorcycle,ship and marine equipment, Industrial machinery, agricultural machinery,sports machinery...

  • Automobile industry
  • Motorcycle industry
  • Industrial machinery
  • Shipping
  • Agricultural machinery
  • Last news

  • O-ring rubber seal performance and application

    2016-10-10

    O-shaped rubber ring are widely used in various mechanical equipment to seal in different temperatures, pressures and media to prevent oil leakage, air leakage, water leakage and the intrusion of external environmental media and dust. Compared with o...

  • O-rubber seal ring design principle

    2016-10-10

    The rubber formula generally consists of raw rubber, vulcanized anti-aging agent reinforcing agent system, protective system, reinforcing system and softening system. The purpose of the formulation design is to find the best combination of the variou...

  • Structural composition of rubber products

    2016-10-10

    Linear structure: the general structure of unvulcanized rubber. Due to the large molecular weight, it has a thin mass after no external force. When the external force acts, the removal force is removed, the entanglement degree of the thin group chang...

  • Medium working pressure and permanent deformation

    2016-10-10

    The pressure of the working medium is the main cause of permanent deformation of the O-ring. The working pressure of modern hydraulic equipment is increasing. Long-term high pressure will cause permanent deformation of the O-ring. Therefore, the desi...

  • Compression ratio and the relationship between the amount of stretch and permanent deformation

    2016-10-10

    The rubber of various formulations used in the production of O-rings produces a compressive stress relaxation phenomenon in a compressed state, at which time the compressive stress decreases with time. The longer the use time, the greater the compres...

  • Relationship between temperature and O-ring relaxation process

    2016-10-10

    The use temperature is another important factor affecting the permanent deformation of the O-ring. High temperatures accelerate the aging of rubber materials. The higher the operating temperature, the greater the compression set of the O-ring. When t...

  • Friction and O-ring application

    2016-10-10

    In dynamic seals, friction and wear are important factors in the damage of O-rings. The degree of wear depends mainly on the amount of friction. When the liquid pressure is small, the amount of friction of the O-ring depends on its pre-compression am...

  • Silicone products and rubber products

    2016-10-10

    The silicone product is a kind of silicone rubber and belongs to a one-component room temperature vulcanized liquid rubber product. Once exposed to the air, the silane monomer condenses, forming a network structure, cross-linking the system, not melt...

  • Causes of rubber scorch

    2016-10-10

    The scorch of rubber is a kind of advanced vulcanization behavior, that is, pre-vulcanization phenomenon occurring in various processes before vulcanization (smelting, compound storage, extrusion, calendering, molding), so it can also be called early...

  • Our Partner

    Our produces are widely used in automobile,motorcycle,ship and marine equipment, Industrial machinery, agricultural machinery,sports machinery...