In addition to the high-end seal business, the company has actively expanded its business layout and invested heavily in the research and development and production of automotive industry mold and inspection tool businesses. We have been deeply involved in the mold industry supporting the world's top 3 automotive glass enterprises for over 20 years, accumulating profound and rich practical experience in the independent research and development and customized production of automotive glass mold inspection tools. Up to now, we have successfully developed thousands of sets of high-precision automotive glass forming molds and professional inspection tools, empowering the precise production and quality control of automotive glass products. With outstanding R&D strength and manufacturing precision, we have become one of the rare professional technical experts in the automotive glass mold and inspection tool industry.

We have built a professional, stable and high-quality technical talent team to support the continuous innovation and iterative upgrading of our products and technologies. The company has 7 experienced design engineers with 5-8 years of professional industry experience, who are proficient in customized mold and inspection tool design and structural optimization. It also employs 15 senior and intermediate technicians with more than 10 years of on-site manufacturing experience, who guarantee the exquisite craftsmanship and stable quality of product processing and production. In terms of quality control, we are equipped with 4 seasoned quality engineers with over 8 years of industry experience, who implement full-process quality inspection and strict quality management to ensure that every product delivered to customers meets international industry standards and customized technical requirements.

Raido, founded in 2005, is an emerging technology company specializing in the production of high-end seals.

For the past 20 years, we have provided services to over 1000 customers from trade to production, and our professional advantages have become increasingly prominent. We mainly focus on customers' special needs and market gaps, and continue to devote ourselves to the research and development of special seals for extremely harsh working conditions such as high temperature, high pressure, and corrosion. We have formed a distinctive product line led by metal hollow O-rings, metal C-rings, PTFE rubber composite gaskets, and low stress rubber gaskets.

The deep roots of Raido Semiconductor are a microcosm of the rapid development history of China's semiconductor industry, with industry advantages such as high market share and wide service scope, a highly stable customer base in the semiconductor industry, and milestone achievements.

As the company's flagship product, the metal hollow O-ring has been deeply rooted in the chemical fiber industry for 20 years, providing direct and indirect services to internationally renowned brands such as OERLIKON and TMT. The product once had an international market share of over 40% in this field.

Our Story

As the company's flagship product, the metal hollow O-ring has been deeply rooted in the chemical fiber industry for 20 years, providing direct and indirect services to internationally renowned brands such as OERLIKON and TMT. The product once had an international market share of over 40% in this field.

Excellent talents, advanced technology, sophisticated equipment, complete molds, and reasonable inventory are moving towards the advantages of more advanced equipment, more scientific management, more effective control, faster response, and more thoughtful service. All of these are the foundation that customers can trust. Raido is willing to serve our customers with high-quality products, excellent services, and optimized knowledge. We sincerely welcome new and old customers to visit and inspect our factory!

Raidosealing 20-Yr Expertise: Metal Seals for Extreme Temp & Pressure


Our Mission

At Raido, our mission is to provide innovative and reliable sealing solutions that enhance the efficiency and performance of our clients' operations. We are committed to delivering products that not only meet but exceed industry standards, ensuring the highest levels of safety and durability.

Our Teams

Durable gold-plated metal C-ring with spring reinforcement for enhanced sealing in criticalRaido's expanded PTFE tape: flexible, chemical-resistant sealing solution for industrial application

Ample Talent Reserve

Attracting top - notch industry talents, with a complete internal training system and a reasonable talent echelon, injecting lasting impetus into the company's development.

Outstanding Innovation Ability

Continuously investing in R & D and innovation, launching multiple new products each year. Keeping up with market trends, we provide customized solutions for customers.

Efficient Team Collaboration

All departments cooperate closely with seamless information flow. The entire process from R & D to delivery operates efficiently, ensuring the smooth progress of projects.

Rapid After - sales Response

A professional after - sales team is on standby at any time, responding quickly within 24 hours. They comprehensively solve customers' problems, ensuring customers' worry - free use.

Corrosion-resistant Alloy 600 Metal O-ring sprayed with PTFE for enhanced chemical resistanceA melt filter paired with a robust metal O-ring, ensuring leak-tight sealing in high-temperature
Durable heat exchanger gasket: high-temperature, pressure-resistant sealRaido's durableG-ST metal-reinforced rubber gasket: robust seal for industrial pressure applicationsRaido's reliable clamp gasket: secure, leak-proof seal for industrial pipe clamp connections.Chemical-resistant PTFE gasket: high-performance seal for industrial pipelines and equipment.

Rich Market Experience

Having been deeply engaged in the sealing parts field for a long time, we cooperate with many well - known enterprises. The market share has been steadily increasing, and we enjoy a good reputation and wide recognition.

Strict Quality Control

A complete quality system ensures full - process inspection. Precision testing equipment is used, and the product qualification rate far exceeds that of peers. The reliable quality is trustworthy.

Exquisite Production Technology

Equipped with advanced facilities and proficient technicians, featuring a high degree of automated production. The production efficiency is constantly improved, and sufficient production capacity meets diverse demands.

Strong R & D Capability

A gathering of senior R & D elites, with numerous patented achievements every year. They accurately grasp cutting - edge industry technologies and continuously introduce innovative sealing products.

Since 2005, we have been selling imported Chemseal Gasketsand metal sealing rings while developing our own technology. We have independently developed no adhesive production Chemseal gasket、automated welding equipment, customized heat treatment equipment, and created Raido's unique weldless thermoforming technology. Our innovations include automated welding processes, customized heat treatment solutions, and seamless metal C-ring welding.

Customer-Centric Approach

Raidoseal prides itself on its customer-centric business model, which is evident in their dedication to understanding and meeting the specific requirements of their clients. They offer personalized solutions, customized seal designs, and tailored services to ensure that each customer's needs are met efficiently. This approach fosters strong customer relationships and enhances customer satisfaction

Innovation and Development

From new products to the latest technical updates and happenings, see the latest Raido company news, and upcoming events.
Metal O-Ring Craft: A 1942-Born Veteran's Factory VisitMetal O-Ring Craft: A 1942-Born Veteran's Factory Visit Metal O-Ring Craft: A 1942-Born Veteran's Factory Visit Opening: A Visit That Bridges Generations On a crisp autumn morning, the gates of Shanghai Raido Machinery & Technology Co., Ltd. swung open to welcome a visitor whose name carries decades o
Created on 07.31
Fiber Optic Submarine Repeater Sealing: Metal C-Ring SolutionsFiber Optic Submarine Repeater Sealing: Metal C-Ring Solutions Fiber Optic Submarine Repeater Sealing: Metal C-Ring Solutions Introduction to Fiber Optic Submarine Repeaters and Sealing Needs Modern global communications depend heavily on a vast undersea network of fiber optic cables that transmit data across
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Fiber Optic Communication: Solving Submarine Repeater Sealing with Metal C-RingsFiber Optic Communication: Solving Submarine Repeater Sealing with Metal C-Rings Fiber Optic Communication: Solving Submarine Repeater Sealing with Metal C-Rings Introduction to Fiber Optic Communication Systems Modern global connectivity depends on the reliability of fiber optic communication systems that transmit data acros
Created on 07.26
C Position Debut: How Externally Opening Metal C-Rings Reshape Butterfly Valve Sealing PatternsC Position Debut: How Externally Opening Metal C-Rings Reshape Butterfly Valve Sealing Patterns C Position Debut: How Externally Opening metal C-rings Reshape Butterfly Valve Sealing Patterns Current Challenges of Butterfly Valve Sealing In the modern industrial system, valves are the core components of fluid control, and their performance d
Created on 06.11
Feasibility Analysis of Metal C-Ring in Vacuum Gate Valve ApplicationFeasibility Analysis of Metal C-Ring in Vacuum Gate Valve ApplicationAbstract: As a core component controlling the on-off of media in vacuum systems, the sealing performance of vacuum gate valves directly determines the system's vacuum degree, operational stability, and service life. Metal C-rings are increasingly used in
Created on 2025.12.28
Feasibility Analysis of Stainless Steel Reinforced PTFE Gaskets and PTFE-Rubber Composite Clamp Gaskets in Peanut Butter and Butter Production EquipmentFeasibility Analysis of Stainless Steel Reinforced PTFE Gaskets and PTFE-Rubber Composite Clamp Gaskets in Peanut Butter and Butter Production Equipment1.Introduction: Core Requirements for Gasket Selection from the Perspective ofCase Pain Points A large peanut butter manufacturer in the UnitedStates experienced two consecutive product recalls due to particlecontamination caused by the degradation o
Created on 2025.12.07
Welding Preheating: Principles, Functions and Practical Key PointsWelding Preheating: Principles, Functions and Practical Key PointsI.Definition and Core Value of Welding Preheating ParagraphSummary: Define welding preheating and expound its core functions andnormative basis. Welding preheating refers to the process of heating the basemetal area around the weld joint to a specifi
Created on 2025.11.26
Know the 5 Weld Joint Types? Guess Which One ShanghaiRaido Uses for Seals!Know the 5 Weld Joint Types? Guess Which One ShanghaiRaido Uses for Seals!A weld joint is a specific location or edge where two or more pieces of metal or plastic are joined together by welding. The American Welding Society recognizes five primary types of weld joints: butt, corner, edge, lap, and tee joints. Types of Weld Join
Created on 2025.11.14
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