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Latest update: 21/05/2021 11:23:33


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A specialized O-ring manufacturer with 65 years of history. All of our products are manufactured domestically at our factories and partner factories, without relying on overseas production. Our lineup of standardized products offers more than 80,000 items, which is the largest in Japan in terms of material types and sizes. Based on our management philosophy of “high quality, rich lineup, immediate delivery,” we have an abundant lineup of high-quality products, and respond to demanding needs of customers in detailed manner with our quick delivery system that makes full use of IT and logistics.

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Features of Morisei Kako Co., Ltd.
[High quality] Advanced manufacturing technology and thorough quality control
To provide “O-rings that can be used with a sense of security,” in addition to obtaining JIS B 2401-1, ISO-9001, and 14001 certification, we consistently make efforts to standardize and improve production processes and have earned high praise and confidence from our users for our “O-rings that can be used with a sense of security.”
[Product lineup] Abundant standards and materials
We offer approximately 80,000 types of O rings, which are provided in various inner-diameter sizes, ranging from 0.5 to 1,500 mm. We provide a wide variety of materials, from general-purpose materials that meet JIS standards to our “Morisei Perfluoro,” ultrahigh performance fluoro-rubber that supports various use environments. 
[Instant delivery] Utilization of abundant inventory internet
Coordinating our web ordering system of agencies and the distribution center located in our Chiba factory production base, we work to achieve quick delivery around the clock.
Morisei Co., Ltd.’s O-ring materials can be used in harsh environments
Morisei Kako Co.,Ltd. manufactures O-rings made from ultrahigh performance “MORISEI PERFLUORO” fluoro-rubber that has solvent-resistance and plasma-resistant properties to allow it to be used under harsh conditions, in addition to O-rings made of general-purpose materials (rubber).
The “Morisei Standard” that we have developed independently covers “irregular” needs that fall under any of the general dimension standards, such as JIS. We will continue to develop products that can be adapted to various use environments.

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