The Muncie 12T42427 is a genuine Viton O-Ring used in Muncie PTO service and repair applications. Viton material provides resistance to heat, fuel, and hydraulic fluids, making it a reliable choice for PTO sealing points where standard rubber compounds are not suitable. This part is identified directly in Muncie Power Products service documentation (SP15-02.RM.pdf) as a genuine replacement component. Pro Gear and Transmission carries genuine Muncie service parts. Call us to confirm this is the correct O-Ring for your specific Muncie PTO unit.FeaturesGenuine Muncie Power Products replacement partViton material – resistant to heat, hydraulic fluids, and petroleum-based mediaIdentified in Muncie service document SP15-02.RM.pdf as O-Ring, VitonDesigned for use in Muncie PTO units requiring Viton-grade sealingCall Pro Gear and Transmission to confirm fitment for your specific PTO applicationUsed in this Muncie PTO modelRM Series