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About Us
future-oriented
'OuSai' Is a Growing Manufacturer
OuSai Seals is a professional sealing solutions and fasteners manufacturer founded and headquartered in Hebei, China. We specialize in providing high-quality sealing products and industrial fasteners to customers worldwide, offering a reliable one-stop solution for sealing and fastening applications.
As an experienced O-Rings manufacturer, OuSai Seals started with standard O-Rings and has continuously expanded its product range. Today, our sealing products include rubber to metal bonded seals, gaskets, FEP encapsulated O-Rings, vulcanised O-Rings, O-Ring cord, as well as back-up rings, bonded seals, X-rings, V-rings, oil seals, and custom rubber moulded parts. All products are manufactured to meet strict quality standards and demanding operating conditions.
To better support complete assembly requirements, OuSai Seals has expanded into the supply of industrial fasteners. Our fastener range includes bolts, nuts, screws, washers, and customized fastening components, suitable for machinery manufacturing, automotive systems, power generation, hydraulics, and general industrial applications. Combining sealing components and fasteners allows our customers to reduce sourcing complexity and improve production efficiency.With advanced production equipment, strong engineering support, and fast prototype development, OuSai Seals supports customers from design and material selection to mass production. Our products are widely used in automotive, medical, military, aerospace, electronics, energy, and industrial equipment sectors.
As a trusted rubber seals and fasteners supplier, OuSai Seals is committed to continuous improvement, stable quality, and long-term cooperation. We aim to deliver reliable products, competitive pricing, and responsive service to partners around the world.Get To Know OuSai
Get To Know OuSai
Certificate
ISO & CE Certificated
Design
OEM or ODM
Quality
Strictly Control
Warehouse
Stock is available
Material
Good quality
Machine
Advanced Technology
“Quality is the best business plan.”
John Lasseter
Remember the Past
Since 1998
OuSai seals is a family owned company since 1998. At the beginning of China’s reform and opening up, Mr. Ruijian Lee resigned from his stable job in the government department because of his love for the machinery industry, and started his own business from sealing products. For the past 20 years, he has been working on the domestic market.
With the development of economic globalization, Mr. Ruijian Lee established his own trading company, aiming to take his advantages in this field as the starting point for further development and provide customers with green and durable sealing products and solutions.
Allow customers to receive additional value from Ousai SEALS cooperation.