Massey Ferguson Transmission O-Ring OEM Fit Ø253.59mm | 378290X1The Massey Ferguson 378290X1 O ring ensures a leak proof seal within transmission assemblies, preventing fluid loss and protecting internal components from contamination. It plays a critical role in maintaining hydraulic efficiency. This O ring features a diameter of 253. 59 mm and a thickness of 3. 53 mm, engineered for durability under pressure and temperature fluctuations. Made from premium elastomer, it ensures flexibility and long service life.