Established ISO 14001 Environment Assurance Implementation Committee.


Established IATF 16949 Quality Assurance Implementation Committee.


Acquired ISO9000 2015 Quality Certificate


Became Multiple Brand Supplier and Acquired ISO9001 2008 Quality Certificate


Acquired ISO9000 Quality Certificate


Established ISO9000 Quality Assurance Implementation Committee.


Founded WSI


WELL OIL SEAL INDUSTRIAL CO., LTD. founded in 1984, is located in central Taiwan.

Since its establishment, it has been specializing to the production of Oil Seals, Lip Seal, Wiper Seal, O-Rings, and special designed developed products, which are applied for auto, motorcycle, truck, machine, industry, and tractor.

With up to 30 years of professional experiences, WELL keep upgrading the technique, facilities, equipments, management and service in order to achieve the superior quality for meeting the various requirements.

With specialist sales personnel in each of our product categories, we are well equipped to handle every enquiry with the assurance of the “right product for the right job” philosophy. And we devote ourselves to bring generations of experience and expertise in the automotive market to customers throughout the world.

Professional experience in sealing technology for more than 30 years
OE expertise – approved supplier and technology leader for the automobile industry
Well oil seal in OEM quality
Wide product range worldwide
Standard products and customer-made products are all available.
Driven range of spare parts for cars and commercial vehicles

To maximize the customer's needs and expectations are our vital goal. We resolve to make our customers more successful and efficient by helping them solve their problems. We provide essential product knowledge so that our customers can better understand the advantages of our oil pump seal products. However, we deliver exceptional value through our commitment to professional service and reliability.

The mission of WSI Seals is to offer our customers the most durable oil seals, delivered in the fast way and provides our customers with the BEST CUSTOMER SERVICE in the industry.

“Customers First, Quality Best, Flexible Production, Fast Delivery, Accurate Delivery Date,” has been the operating philosophy for a long time.

In the future, WELL will be upholding the enthusiasm to serve you, assist your needs with our expertise, and create a series of high-quality grease seals to create maximum value for you.