O-Ring BOSS Hydraulic SAE 212 Pieces O Rings Seal Kit Buna-N 90A for Boss Tube Fitting Application Hydraulic Fitting Hydraulic Pumping Sealing Straight Thread Tube Fittings. Wide Application: Use for boss tube fitting application,hydraulic fitting,hydraulic pumping,sealing straight thread tube fittings, hydraulic/pneumatic motors, cylinders.
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