Hatroi HA245 Copper Head Seal - for #831 OS FS-200S-P  [HA245]

Durable copper head seal for OS FS-200S-P

The Hatroi HA245 copper gasket is an RC-scale replacement head seal specified for the #831 OS FS-200S-P engine. It forms the sealing interface between the cylinder head and crankcase in glow engines to help keep compression consistent and preserve combustion chamber integrity during maintenance.

Workshop installation is simple: remove the cylinder head, check the mating faces for contamination or nicks, position the HA245 squarely on a clean surface, then refit the head using the engine manufacturer's recommended fastening sequence and even tightening to prevent distortion. Do not alter the thickness or shape of the gasket and avoid overtightening hardware.

From a service perspective, a copper gasket like the HA245 helps prevent fuel and oil seepage at the head joint and restores compression when a flattened or damaged gasket is replaced. Because it is a consumable item, carry spare Hatroi HA245 gaskets for rebuilds or regular maintenance cycles.