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plug Product List

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Plug "Lee QIP Expansion Plug"

Improved handling of the high reliability plug Lee Plug!! Quick Installation Lee Plug

The small plug manufactured by LEE has been adopted in the aerospace industry for many years. This product adds ease of use to the trust and performance that the LEE Plug has cultivated over 70 years. While conventional Lee plugs were divided into two parts, PIN and PLUG, the QIP plug has made handling during installation easier for customers by integrating the PIN and PLUG in advance. <Features> ■ Easy installation ■ Reliable sealing performance with LEE's unique press-fit method ■ Maximum pressure of 82.7 MPa (12,000 psi) ■ Complies with RoHS, REACH, WEEE, and ELV. For more details, please download the catalog or contact us using the information below.

  • Actuator

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Aluminum press-in plug "Beta Plug"

An aluminum ultra-lightweight sealing plug that allows liquid sealing without the need for screw plugs or sealants! Used in aircraft for 70 years!

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 can be reliably inserted automatically or manually, and is designed to minimize the occurrence of cracks even 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 over a surface on the counterpart base material, allowing for strain-free insertion ■ Insertion status can be monitored through visual inspection and management of insertion depth and pressure, simplifying 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 materials or feel free to contact us.

  • 20mm-Short-Betaplug.jpg
  • Transmission parts

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High-pressure compatible 100MPa plug (seal plug)

This is a high-pressure plug presented by Lee Company, which boasts a top-class share in the aviation sector!

Are you aware of the true capabilities of the plugs (sealing plugs) used in the aviation industry? If there were an incident involving hydraulic plugs (sealing plugs) used in aircraft, there is a significant probability that it would lead to a serious incident, and depending on the situation, an emergency landing may be necessary. The plug (sealing plug) that boasts immense reliability in that industry is the "Lee Plug," which has maintained a top-class market share in the aviation industry for over 70 years, and there are reasons and value behind this. It can certainly contribute to future high-pressure related developments (such as hydrogen-related and deep-sea drilling-related projects). Our dedicated sales engineers will support you in maximizing the benefits by utilizing the technology cultivated in the aviation sector.

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  • Dual Sealing AFO PLug1.jpg
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  • pre_assembled_lee_plug.jpg
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  • Hydraulic Equipment
  • Pneumatic Equipment
  • Water Hydraulic Equipment

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Aerospace Industry Plug "Lee Plug"

Aerospace industry No.1 share plug!! The benchmark for expansion plugs representing the industry!!

The Lee Plug is the foundation of our extensive aerospace product line. Going back to the 1950s, engineers were searching for a more reliable and effective way to seal machined metal housings and cross-drilled holes. In response to this need, The Lee Company created a plug designed to form a permanent leak-proof seal without the use of O-rings, screws, or sealants. The Lee Plug remains the company's best-seller, with over 200 million plugs used in aircraft, missiles, space transportation systems, and other advanced hydraulic systems. There are various reasons why the Lee Plug continues to be a best-seller. Not only is Lee Company the original OEM and the only certified supplier of single point of failure (SPOF) technology, but our expertise in solving technical challenges, experience, innovative products, and commitment to quality set us apart from competitors. This is why The Lee Company remains the only SAE-certified provider of aerospace expansion plugs. More than half of our products are custom-made to meet specific requests, and we contribute to solving your company's challenges with flexible responses.

  • Hydraulic Equipment
  • Sealing

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