What is the rebuild kit for the Bostitch SX1838K stapler? Support October 03, 2020 18:15 The rebuild kit model number for the SX1838K is BT55/SX38-RK. Please click here to purchase this item at our Bostitch ServiceNet website. Related articles My Bostitch pneumatic nailer/stapler is leaking air from the exhaust area. What are the most common causes? Common O ring kits and trigger valve kits for Bostitch tools Where can I purchase repair parts for my Bostitch tools? What is the trigger valve kit number for the Bostitch model BT1855K brad nailer? The new Bostitch manual flooring nailer model MFN-201 looks much like the older model MFN-200. Can I use the same repair parts? Comments 0 comments Please sign in to leave a comment.