About Us

Why Choose WSI?

Established in 1984, Well Oil Seal Industrial Co., Ltd. has nearly 40 years of experience in oil seal production and design. We have maintained a collaborative partnership with Japanese technology for a decade, significantly elevating Taiwan’s standards in international oil seal design and manufacturing.

With this strong foundation, we successfully created our own brand, WSI, and swiftly introduced it to the global market. Currently, we have established cooperative relationships in various countries, including Europe, North America, Central and South America, East Asia, Belarus, and Southeast Asia. Our business spans across more than 30 countries, and we have established original equipment parts supply chain partnerships with world-renowned automakers such as Honda, Nissan, TOYOTA, and others.

WSI is dedicated to providing customers with comprehensive sealing solutions, offering diverse, high-quality oil seals and sealing components. From blueprint design, mold development, metal casing treatment, spring manufacturing, oil seal molding, to packaging and shipping, all processes are conducted in-house.

With a wealth of application experience and a track record dating back to our inception, we specialize in the production and design of oil seals, applying them in the manufacturing of special products for automobiles, motorcycles, trucks, machinery, industrial equipment, and tractors.

Over the years, we have not only introduced foreign industrial sealing solutions but also collaborated with foreign companies to enhance product quality and applicability based on customer demands.

To meet customer requirements and enhance customer confidence and loyalty, our company has obtained certifications such as ISO 9001/2015 Quality Management System, ISO 14001 Environmental Management System, and IATF 16949 Global Automotive Industry Quality Management System.

Furthermore, WSI is actively preparing for AS9120 Aerospace Industry Quality Management System certification, with hopes of making a mark in the field of aviation components in the future.

Mission and Vision

WSI’s mission is to provide high-quality sealing products to the global market at competitive prices with short delivery cycles. Our foremost goal is to maximize customer needs and expectations. We are committed to assisting customers in solving problems, helping them achieve success and high efficiency.

Our services span across various industries, including automotive, oil and gas, medical, food, semiconductor, valves, and more.

WSI maintains comprehensive inventory of sealing components, hydraulic seals, pneumatic seals, mechanical seals, bearing isolators, O-rings, and more.

We provide essential product knowledge to enable customers to better understand product advantages. Furthermore, we showcase WSI’s excellence through professional service and dependable commitments to our customers.

To meet the demands of the sealing components market, WSI has invested in various research and development equipment and made breakthroughs. For more information on our research and development capabilities, please refer to “Our Capabilities.”

Continuous Innovation for Enhanced Competitiveness

We continuously introduce more precise production, inspection, and automation equipment while innovating and improving our management, production, and quality processes. To boost competitiveness, we offer specialized production lines to OEM customers and expand our dedicated rubber testing laboratory to increase our current production capacity. The combination of these two expansive facilities positions us as one of Taiwan’s leading brands in the field of oil seals.

Collaboration with Customers for Outstanding Service

Through close communication with customers and collaboration on various development projects, we continually accumulate experience and knowledge to meet customer needs and deliver exceptional service quality. We look forward to establishing long-term and robust partnerships with you, working together to create a brighter future.

Providing solutions for various sealing needs
Offering customers precise, fast, and high-performance sealing components
Establishing standardized and customized sealing solutions
Assisting customers in developing specialized sealing components for specific applications
Providing professional consultation and services for sealing component selection and failure diagnosis.

Historical Development

Quality Control Management

In our commitment to providing our customers with excellent product quality and service, WSI continuously strives for certifications in various quality and environmental standards. These certificates acknowledge our ability to maintain product quality stability and deliver products while adhering to a comprehensive set of techniques and methods.