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At a Glance: Replacement fluid cap washer for the AB17G—supports proper sealing to reduce leaks and keep spray performance consistent.
A spray gun’s finish quality depends on stable pressure and proper sealing—especially around the front-end assemblies. The AirCraft SG AB17G-15 Fluid Cap Washer is a replacement sealing washer designed for the AB17G spray gun, helping the fluid cap seat correctly and maintain a tight seal. If the washer is worn, flattened or damaged, you can end up with seepage, air leaks, inconsistent atomisation or messy buildup around the cap. Replacing this washer is a simple, low-cost service step that helps keep your AB17G clean, leak-free and spraying evenly.
Seal The Front-End: a fluid cap washer that helps your AB17G stay tight and spray cleanly
Fluid cap washers compress to fill tiny gaps between parts and support correct alignment and sealing. Over time they can deform or harden, leading to leaks and spray inconsistencies. A fresh washer helps restore proper seating and stable performance.
Extra Information
Clean the cap seat and mating surfaces before installing the new washer—dried paint can prevent proper sealing.
If leaks persist, inspect the fluid cap, nozzle seat and related seals for wear or damage.
Pro Tip
Hand-tighten first to avoid cross-threading, then snug it up evenly. Over-tightening can crush washers and distort seating—good sealing comes from correct fit, not brute force.
Features
Fluid cap washer replacement Designed to suit the AirCraft AB17G spray gun
Supports proper cap seating Helps maintain correct alignment and sealing at the front end
Helps reduce seepage Minimises leaks and build-up around the fluid cap area
Service-friendly spare part Ideal for routine maintenance and rebuilds
Benefits
Helps prevent leaks: Improves sealing to reduce seepage and air loss around the cap
More consistent atomisation: Stable sealing supports an even spray pattern
Cleaner operation: Less paint/solvent build-up around the front assembly
Cost-effective maintenance: Small part replacement that can restore performance quickly
Safety
Disconnect from the air supply before disassembly and parts replacement.
Wear eye protection when handling solvents and small components.
Use cleaners/thinners in a well-ventilated area and keep away from flames or sparks.
After reassembly, test at low pressure first to confirm proper sealing before normal use.
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