We will be exhibiting at the Automotive World (Automotive Parts & Processing EXPO) 2019.

No screw processing or similar is required for installation! A super lightweight aluminum sealing plug that reduces the number of work steps.

The "LEE Beta Plug (Seal Plug)" is a sealing plug that allows for liquid sealing without the need for threaded plugs or sealing agents. It enables reliable automatic or manual insertion, making it less likely to cause cracks in brittle base materials. It is suitable for those who are troubled by issues such as burrs from threading, contamination from wrapping sealing tape, or damage due to improper insertion of plugs. 【Features】 ■ No additional processing such as threading required ■ Elimination of human error due to no torque management needed during plug insertion ■ Reduced risk of burr formation in processed holes ■ Elimination of contamination risks *For more details, please refer to the PDF document or feel free to contact us.

• Transmission parts

Ideal for automating manufacturing lines! A sealing plug utilizing know-how used in aircraft.

The "LEE Company Beta Plug (Seal Plug)" is an ultra-lightweight sealing plug made of aluminum that allows for liquid sealing without the need for threaded plugs or sealants. It offers reliable automatic or manual insertion, making it less likely to cause cracks in brittle base materials. Utilizing 70 years of expertise used in aviation, it can be applied to automotive parts, hydraulic control components (pumps), machine tools, and more. 【Features】 ■ Capable of mass production ■ Stress is applied to the surface of the counterpart base material, allowing for insertion without distortion ■ Visual management of insertion state through monitoring of the amount of driving and pressure input simplifies the work process ■ Easy installation without the need for threading or other processing ■ Available in various sizes from 5mm to 20mm *For more details, please refer to the PDF document or feel free to contact us.

• Transmission parts

Reduction of installation labor! The check valve and orifice are integrated into a single structure, allowing both parts to be installed with a single press-in!

This product is developed based on aerospace equipment from Lee Company, which has high reliability and a proven track record in aircraft and similar applications. It combines an industrial check valve with a high-precision orifice produced using Lee's unique manufacturing method, featuring a function that arranges the check valve and orifice in "series." In addition to managing what was previously handled by two components with a single unit, installation is also simplified to a single step, reducing installation labor. 【Features】 - Simplification of the manifold by combining hydraulic control components - Improved consistency in system performance due to the ability to achieve accurate flow with this product - 100% inspection of all products before shipment, eliminating the need for re-inspection at your facility.

• Water Hydraulic Equipment
• Hydraulic Equipment
• Pneumatic Equipment

An orifice optimized for gas/liquid use with an easy installation mechanism. It can keep flow variation within ±5%.

This is a high-precision orifice produced using Lee's unique manufacturing method. Since the tolerance management is defined by the actual flow rate rather than the hole diameter, we supply accurate flow values that meet your required flow rate and within strict tolerances. It is a compact, lightweight, and easy-to-install orifice with high reliability. - Since flow management is conducted in one direction only, we offer a forward type where the flow direction and installation direction are the same, and a reverse type where they are opposite. - The all-stainless steel construction ensures robustness and high durability. - We can also provide very small orifices, such as 0.5mm, making them suitable for purposes like air bleeding.

• Hydraulic Equipment

A valve compatible with 40MPa (400bar) is now available in the lineup for industrial check valves!

Compact and lightweight insert-type check valve Maximum operating pressure 40 MPa (400 bar) All stainless steel construction 100% inspection of all products before shipment, etc.

• valve
• Hydraulic Equipment
• Brake parts

We will be exhibiting at the "12th Conference of the Advanced Power Semiconductor Subcommittee" held at the Toyama International Conference Center. We will be introducing our latest analysis technology services, so please stop by! We sincerely look forward to your visit.

Our company will exhibit at the Measurement and Measurement Comprehensive Technology Exhibition in Hokuriku, showcasing safety products with Gemba Reporter. Please be sure to stop by booth number "72" when you visit. 【Date and Time】 November 6, 2025 (Thursday) 9:00 AM - 5:00 PM 【Venue】 Ishikawa Industrial Exhibition Hall, Building 2 From JR Kanazawa Station, take the Hokutetsu Bus bound for "Shimo-Yasuhara" and get off at "Fukurobatake Town West Green Park," then walk for 5 minutes. Alternatively, take the Hokutetsu Bus bound for "Saiseikai Hospital," get off at "Seibu Green Park," and it will take about 15 minutes by taxi. 【Materials】 https://www.line.co.jp/wp-content/uploads/2025/10/MepTechhokuriku2025.pdf 【Notes】 Please register in advance using the 2D barcode in the PDF.

Sekiguchi Iron Works Co., Ltd. will exhibit at the "Environmental Industry Expo 2025" held at S-Bird in Iida City, Nagano Prefecture. This exhibition aims to pave the way for a sustainable future from the local community. It is a trade fair for environmental-related industries originating from the Minami-Shinshu region of Nagano Prefecture. Our company will introduce next-generation solutions for reducing environmental impact and effectively utilizing energy, including our "smokeless small incinerator" and "stove," along with product panels and case studies. No pre-registration is required, and admission is free. We sincerely look forward to your visit.

Recently, fine bubbles, which are tiny bubbles smaller than 100 μm and are referred to as "fine bubbles," have attracted attention in various fields such as the environment, agriculture, food, fisheries, and medicine, due to their ability to impart various functions to liquids. Fine bubbles are classified into two types based on their size: microbubbles and ultrafine bubbles. Recently, there has been a growing interest in ultrafine bubbles, which have a lifespan of several weeks to months. However, listening to the voices of researchers and users reveals some skepticism, which has become one of the issues hindering the spread of fine bubble technology. On the other hand, we have challenged the elucidation of the stabilization mechanism of ultrafine bubbles from a new perspective by enabling the control of number density exceeding 10 billion particles/mL without pressure or concentration operations using our ultrafine bubble generation technology. In this seminar, we will provide a fundamental explanation of fine bubble technology, including the basic physical properties, characteristics and functions, device technology, measurement and evaluation methods, and case studies, to promote research and utilization of fine bubbles based on a correct understanding.

Sekiguchi Iron Works Co., Ltd. will exhibit at the "Minami-Shinshu Environmental Messe 2025" held at S-Bird in Iida City, Nagano Prefecture. This exhibition will be held simultaneously with the "Environmental Industry Trade Fair" taking place the day before. It will be held over the weekend, with many family-friendly events planned. We encourage those who usually find it difficult to visit to take this opportunity to come. Our product exhibition area is located about 10 minutes from the venue. We sincerely look forward to your visit.