NIYOK is a rubber sealing component manufacturer with more than 40 years of experience in automotive and motorcycle sealing applications. We supply valve stem seals, power steering seals, transmission...

NIYOK is a rubber seal manufacturer with over 40 years of expertise in automotive and motorcycle sealing applications, experience we now extend to EV charging infrastructure, serving multiple charging...

A sealing partner built on IATF quality management foundations — for automotive and OEM manufacturers.

EV sealing requirements are far more demanding than those for conventional vehicles: high-speed rotation, thermal cycling, coolant exposure, waterproofing, dustproofing, and long-term compression stability...

Yes. As long as you have the original part, a sample, or partial dimensional data, NIYOK can support a reverse engineering assessment — covering measurement, modeling, material analysis, mold development,...

There are two main reasons to leak, one is the leakage of the inner diameter factor, and the other is the leakage of the outer diameter factor. Therefore, there are so many causes of failure. If you need...

NIYOK has 40 years of professional manufacturing of seals, has ISO 9001 and IATF 16949 quality certification, and is a supplier of original parts for Taiwan Honda, Nissan, Mitsubishi, Lotus, Luxgen and other...

The manufacture of oil seals needs to pay attention to the application, material, hardness, size, and drawing. NIYOK can produce products with a maximum size of 580 mm x 600 mm. In addition to customized...

NIYOK has the most complete and professional QC team in the rubber industry and oil seals, so it can handle customer complaints as soon as possible, and even go to the customer site to understand the situation...