Products Volvo PentaO-Ring Back O-Ring 955989 Item number: 955989 Similar numbers: SIERRA 18-7149 GLM 45140 ID: 15 mm W: 1.5 mm Fit on Volvo DP-S. You May Also Be Interested In Sealing Ring 851407 Sealing Ring 181620 Oil Seal Kit PWSE-951CW-OS Piston 13001-3731