403992 O-Ring Seal Compatible with Paslode Impulse Nailers

Key features

• Part Number and Pack2 pack 403992 O-ring seal designed as a cylinder head sealing replacement for compatible cordless framing nailer systems. Used in the cylinder head and combustion chamber sealing area to help restore proper air and pressure sealing during nailer maintenance
• Tool CompatibilityCompatible with Paslode IMCT cordless framing nailers, including compatible with Paslode 404600-(IM325 Framing) models and related IMCT variants that use the 403992 cylinder head O-ring seal. Please confirm your tool model and parts diagram before ordering
• Brown FKM Material Brown FKM MaterialMade from premium brown FKM fluoroelastomer for demanding cordless framing nailer service. The material is selected for strong high-temperature resistance and helps withstand repeated heating cycles, fuel vapor exposure, oil contact, and common chemical exposure inside combustion-powered tool environments
• High-Temp SealThe cylinder head O-ring helps seal the air and combustion path, supporting stable pressure, consistent firing, and smoother cycling during repeated framing work. Replacing a worn or hardened seal can help reduce air leakage, weak firing, misfires, and uneven tool operation.
• Tool Service UseDesigned for cylinder head service when the nailer shows weak firing, inconsistent drive power, air leakage around the head area, rough cycling, or reduced sealing after repeated high-heat operation. Clean the O-ring seat, place the new 403992 seal evenly without twisting, and reassemble according to the tool service instructions to help restore stable sealing and firing performance.

Free shipping included. 30-day hassle-free returns.