マツイ 東京本社 Official site

"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.

Expander plug

basic information

The "EXPANDER Series" from Swiss company KOENIG is a plug designed to seal the oil passage's drain hole, certified with ISO TS16949. It is used in various industries, including the automotive industry in Japan, as well as in general industry and the medical field. With a purely mechanical seal that eliminates concerns about contamination, it employs a unique surface contact seal, guaranteeing high reliability with "no debris, no leaks, and no damage!"

Price information

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Delivery Time

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Applications/Examples of results

Not only hydraulic pressure, but also machines that use fluid pressure are being adopted. For individual adoption examples, please feel free to contact us. Additionally, we have introduced the EXPANDER series on the Matsui special site. Please refer to that as well.

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