Every time I see an engine torn down that used
these seals I get really angry. Not only do they
chatter they gouge grooves in the chrome plated $600 rotor
housings. Furthermore they do not have "crown". Crown
is  slight curvature of the top of the seal that fits the rotor
housing.

In addition to all that the apex seal springs supplied lose thier
height and temper.

If you have these seals and they are not installed or they
are installed and you have noty run the engine yet take them out
and throw them away.

Use only stock Mazda seals and Ianetti silicon nitride seals.

If they are already in your engine kiss..... your rotor housings goodbye.
The engine won't stop but it will be down on power and burn
more fuel than normal. That is a testimonial on the tolerance
the Mazda  rotary has for inferior parts.

Read this for more info.


http://www.rotaryeng.net/seals.html

http://www.rotaryeng.net/history.html


Paul Lamar