The Crankcase Explosion Relief Valve O-Ring Seal ensures that the valve functions properly by maintaining an airtight seal to prevent oil, air, and gas leaks. During conditions of high internal pressure, such as an engine backfire and explosion, the relief valve opens to release pressure, and the O-ring ensures a secure and effective seal around the valve, preventing oil and gases from escaping.Attributes:• Provides a tight seal to maintain internal pressure balance.• Protects engine components from contamination.• Helps reduce the risk of crankcase pressure buildup.Applications: The Crankcase Explosion Relief Valve O-Ring Seal is positioned around the spring valve within the crankcase of the engine, in the cylinder block to ensure an effective seal for the explosion relief valve to function correctly during necessary pressure relief events.