Description
This part is called a piston locking ring, or sometimes a retaining ring or circlip. Think of it as a sturdy, snap-on bracelet for the piston rod. Once installed into its groove, it locks the piston in position. It acts as a mechanical stop that won’t let the piston slide out. his is the official factory ring for your specific pump model. It is made to the exact size and strength required. Using the correct ring guarantees a secure fit that won’t fail under pressure.

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