【Size】:
Outside Diameter: 1.335";
Height: 0.965"

【Replace part number】:
904685

【Fit for】:
Porter Cable FN250B Type 1 nailer piston Seal for the Head Valve;
FN251 Type 1 nailer piston Seal for the Head Valve

【Description】:
It acts as a cushion when the piston retracts into the cylinder after firing
Because this part get so much abuse it has a tendency to crack and fall apart. If the part is damaged or falls out you should replace it
Please confirm whether it is suitable for your model before purchasing

【Package Includes】:
2 x 904685 Piston Bumper