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  3. マツイ 東京本社
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マツイ 東京本社

Establishment1947/2/1
capital9000Ten thousand
number of employees100
addressTokyo/Minato-ku/2-4-7 Azabudai
phone03-3586-4141
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last updated:Mar 19, 2026
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マツイ Product Lineup

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1~6 item / All 6 items

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Coupling Coupling
reducer reducer
Electric hydraulic actuator Electric hydraulic actuator
Load cell (BROSA Corporation) Load cell (BROSA Corporation)
LED lighting LED lighting
Industrial remote control Industrial remote control
Seal plug Seal plug
Telemetry Telemetry
Electromagnetic brake Electromagnetic brake
Torque limiter Torque limiter
Torque transducer Torque transducer
Others Others
Seal

Seal plug

This is an introduction to plugs used to seal unnecessary holes (waste holes) that can occur during processing. The product being introduced here is the EXPANDER series seal plugs from Swiss company KOENIG. Matsui Corporation is the exclusive distributor for KOENIG in Japan and has established a thorough sales system that covers everything from proposals to after-sales support as a manufacturer.

"Seal plug" that easily seals holes (waste holes) created during product processing.

No glue needed! A seal plug that easily fills holes. Strong against high pressure, perfect for automobiles and hydraulic equipment.

The Swiss company KOENIG's "EXPANDER series" is a plug that easily seals "holes (blind holes)" in automotive-related equipment such as ABS and cylinder heads, as well as hydraulic equipment. We offer the "MB series," which can be simply driven in, and the "SK/LK series," which can be easily pulled out. Automation of installation is possible, enhancing the design flexibility of the products. 【Features】 ■ Unique surface contact seal prevents leaks even at high pressure! (Guaranteed pressure resistance up to 500 bar) ■ No adhesive required! Easy installation without special techniques! ■ No need for post-processing like sealing tape! Significant reduction in man-hours. *For more details, please refer to the materials available for download in the "Download Catalog" section.

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High pressure compatible, easy installation, seal plug, expander, MB series.

Few work processes, no leaks, and does not damage the base material!! A purely mechanical seal that can withstand 450 bar just by being driven into the processing hole!!

ISO TS16949 Certification Obtained - High-Pressure Expandable Plug for Insertion A plug to fill unnecessary holes created during processing. - Easy installation by simply inserting - No adhesive required - Large processing hole tolerance - No reaming required ⇒ Significant reduction in man-hours - Purely mechanical seal - Unique surface contact seal ⇒ High reliability with no debris, no leaks, and no scratches Matsui Co., Ltd. is the exclusive distributor for Kuenik Expandable Plugs in Japan!! *For more details, please refer to the materials available by "Downloading the Catalog."

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Ultra High Pressure Compatible Easy Installation Seal Plug Expander SK Series

Few work processes, no leaks, does not damage the base material!! Just insert and pull into the processing hole, and it can withstand 500 bar with the sealing plug.

ISO TS16949 certification obtained - High-pressure compatible pull-out type expander Plugs to fill unnecessary holes created during processing - Simple process of just inserting and pulling - No adhesives required - Large machining hole tolerance - No reaming required ⇒ Significant reduction in labor hours - Pure mechanical seal - Unique surface contact seal ⇒ High reliability with no debris, no leaks, and no scratches Matsui Co., Ltd. is the exclusive distributor for Koenig expander plugs in Japan! *For more details, please refer to the materials available by clicking "Download Catalog."

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Pull-out type waste hole seal plug expander LK series

Few work processes, no leaks, and does not damage the base material!! The expander series can be sealed simply by inserting it into the processing hole and pulling.

ISO TS16949 certification obtained - Low-pressure compatible pull-out type expander plug for filling unnecessary holes created during processing. - Simple process of inserting into the processing hole and pulling out - No adhesives required - Large processing hole tolerance - No reaming required ⇒ Significant reduction in man-hours - Pure mechanical seal - Unique surface contact seal ⇒ High reliability with no debris, no leaks, and no scratches Matsui Co., Ltd. is the exclusive distributor for Kuenic expander plugs in Japan! *For more details, please refer to the materials available by downloading the catalog.

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Seal plug that easily covers holes (waste holes) created during product processing.

No glue needed! A seal plug that easily seals holes. Strong against high pressure, it is active in the automotive and hydraulic equipment fields.

The Swiss company KOENIG's "EXPANDER series" is a plug that can easily seal "holes (blind holes)" in automotive-related equipment such as ABS and cylinder heads, as well as hydraulic equipment. We offer the "MB・LP series" that can be simply driven in, and the "SK・HK・LK series" that can be pulled out. Automation of installation is possible, enhancing the design flexibility of the products. 【Features】 ■ Unique surface contact seal prevents leaks even under high pressure! (Guaranteed pressure resistance up to 500 bar) ■ No adhesive required! Easy installation without special techniques! ■ No need for post-processing like sealing tape! Significant reduction in man-hours. *For more details, please refer to the materials available by "downloading the catalog."

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"Seal plug" that easily seals holes (waste holes) created during product processing.

No glue needed! A seal plug that easily fills holes. Strong against high pressure, suitable for automobiles and hydraulic equipment.

The Swiss company KOENIG's "EXPANDER series" is a plug that can easily seal "holes (blind holes)" in automotive-related equipment such as ABS and cylinder heads, as well as hydraulic equipment. We offer the "MB series," which can be simply driven in, and the "SK/LK series," which can be easily pulled out. Automation of installation is possible, enhancing the design flexibility of the products. 【Features】 ■ Unique surface contact seal prevents leaks even under high pressure! (Guaranteed pressure resistance up to 500 bar) ■ No adhesive required! Easy installation without the use of special techniques! ■ No need for post-processing like sealing tape! Significantly reduces man-hours. *For more details, please refer to the materials available by "downloading the catalog."

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