Align Cover Gasket/Back Plate O-ring - O.S 55H

This ALIGN 55H cover gasket/back plate o-ring is manufactured by O.S. Engines as the OEM supplier for ALIGN.

Although sold under the ALIGN brand, this gasket is O.S.-made and is designed to fit O.S. 55-size helicopter engines properly. O.S. refers to this part as the Back Plate O-Ring as well. 

It is a direct replacement part with factory-correct fitment, making it ideal for maintenance, rebuilds, or replacing a worn or damaged rear cover gasket / back plate O-ring.

Compatible with ALIGN 55H and O.S. 55 series helicopter engines.