MG9 Equivalent Mechanical Seal

A Compact Equivalent for Space-Constrained Installations

Fitting the MG9 equivalent seal follows the same process as the OEM part — the rubber bellows assembly slides onto the shaft and self-centers around it, the stationary seat is set into the gland, and the unit is locked once alignment is confirmed, with no changes needed to the pump housing. What sets this seal apart within the MG family is its outer diameter, the smallest of the group, which makes it the practical choice when a pump's installation space genuinely won't accommodate a larger bellows seal. It carries the same clogging-resistant, low-part-count advantages as its siblings, since the bellows itself supplies both the spring force and the secondary seal. For complete step-by-step installation instructions and torque specifications, refer to our detailed installation guide on the blog.