• Scheduled Maintenance Notice: This site will be unavailable due to scheduled maintenance from 9:00 p.m. 10/21/2017 to 10:00 a.m. (EDT) 10/22/2017. We apologize for the inconvenience.
  • There are issues downloading CAD models for Press and Mold components from 2017/10/11. We are sorry for the inconvenience, and we are working to have this restored as quickly as possible. For details, please check here.

Masuoka

Masuoka manufacturers various O-rings (including JIS-compliant O-rings) as well as rubber products used in precision equipment.