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THIS IS A NEW CORVETTE SERVO THAT COMES WITH NEW VITON D RINGS ALREADY INSTALLED. (VITON ONE PIECE RINGS, REPLACES THE OLD SCARF CUT TEFLON RINGS.) PLUS YOU WILL GET 2 NEW O-RINGS THAT SEAL IT TO THE CASE. YOU WILL GET THE SNAP RING THAT HOLDS IT INTO THE CASE PLUS THE RETURN SPRING. I ONLY REUSE THE COVER AND PIN ALONG WITH MISC. PARTS. THE SERVO PISTON IS NEW!