If you own a Paslode 3175R coil roofing nailer and it's leaking air or not firing correctly, this 402707 gasket cap might be the fix you need. It's a replacement part designed specifically for the 3175R model, used in rebuild or repair kits to restore your nailer's performance. Over time, the original gasket can wear out, crack, or lose its seal, causing power loss or misfires. Replacing it can often save you the cost of buying a whole new tool. Installation requires disassembling the nailer, so if you're not familiar with pneumatic tool repair, it's best to have a professional handle it or follow a detailed guide. Make sure your nailer's model number matches before ordering. This is a genuine-style aftermarket part that should fit and function like the original. Keep your roofing projects on track by maintaining your tools – this small part can make a big difference in reliability and safety.