O-RING-.487X.103 850143

This genuine replacement O-ring is designed to create a reliable seal around the piston stem in floor nailers, helping to maintain proper air pressure and tool performance. Commonly used in Bostitch floor nail guns, this rubber O-ring plays a critical role in preventing air leaks and ensuring smooth operation. Over time, O-rings can become brittle, stretched, or cracked due to regular wear and exposure to pressure and temperature changes. If your nail gun becomes sluggish or the driver fails to retract properly, it may be time to inspect and replace worn seals. This O-ring measures approximately 0.487 inches in diameter with a thickness of 0.103 inches and is sold individually. For best results, consult your tool’s model diagram to ensure proper fit and placement during maintenance.