Senco SN4 SN70 Framing Nailer Rebuild Kit by William Hendricks Complete O-ring Rebuild kit for the Senco SNIV and SN70 All the O-rings in the tool. Senco LB3500 + SN4/SN70 O-rings + BB0059Senco Seal LB3500 + O-ring Kit IN STOCK For Nailer SN4 SNIV SN70Available Qty: 16