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O-RING KIT FOR SG A138
O-RING KIT FOR SG A138
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AirCraft SG-A138-04 O-Ring Kit – For SG-A138 Airbrush
At a Glance: Replacement seal kit for the SG-A138 airbrush—helps prevent leaks, stabilise pressure and keep spraying consistent.
Airbrushes run on tiny tolerances and controlled airflow, so when an O-ring wears out the symptoms show up fast: air leaks, bubbling, inconsistent paint flow, spitting or a trigger that suddenly feels “off”. Even a small seal can have a big impact because it affects pressure stability and how smoothly the airbrush regulates air and paint.
The AirCraft SG-A138-04 O-ring kit is designed for the AirCraft SG-A138 airbrush and replaces worn or damaged sealing rings to restore reliable performance. It’s ideal for routine maintenance, rebuilding an older airbrush, or troubleshooting leak-related issues that cleaning alone can’t fix.
Fresh O-rings help the airbrush hold pressure correctly, improving spray consistency and reducing the frustration of leaks and unpredictable performance.
Features
- Made For SG-A138 Designed specifically for the AirCraft SG-A138 airbrush.
- O-Ring / Seal Kit Replaces critical sealing points that influence pressure stability and spray control.
- Ideal For Servicing Practical maintenance item for rebuilds and leak troubleshooting.
- Restore Proper Fitment Helps components seat correctly and reduces pressure loss.
Benefits
- Reduce Leaks: Fresh seals help stop hissing air leaks and pressure loss.
- Improve Spray Consistency: Better sealing supports steadier atomisation and smoother paint flow.
- More Predictable Operation: Helps restore stable performance for shading, gradients and general spraying.
- Extend Airbrush Life: Regular seal replacement supports long-term reliability and protects internal components.
Extra Information
- Common signs you need new O-rings: air leakage, bubbling, inconsistent spray, spitting, or fluctuating pressure.
- Cleaning tip: Avoid harsh solvents on rubber seals unless the seals are rated for it—some solvents can swell or degrade O-rings.
- Install carefully: Avoid stretching O-rings too much and ensure each ring sits flat in its groove.
- Light lubrication: A tiny amount of airbrush-safe lubricant can help seals seat properly and last longer.
- Test after fitting: Run clean air first to confirm sealing, then flush with cleaner/water before spraying paint.
Pro Tip
- Replace O-rings one section at a time and test as you go—this makes it easy to identify which seal was causing the leak or performance issue.
Specifications
| Description | Spec |
|---|---|
| Brand | AirCraft |
| Cat No. | SG-A138-04 |
| Product Type | O-Ring Kit / Seal Kit |
| Compatible Model | SG-A138 Airbrush |
| Application | Airbrush Sealing, Leak Prevention & Pressure Stability |
| Recommended Use | Routine Maintenance / Leak Repair / Rebuild |
| Category | Airbrush Spare Parts |
Safety
- Disconnect and depressurise the air supply before disassembling the airbrush.
- Work in a well-ventilated area, especially when using thinners, cleaners or solvent-based paints.
- Wear eye protection during cleaning and reassembly—cleaners and small parts can splash or slip.
- Keep cleaners and paints away from open flames and follow the safety guidance on the products you use.
- After reassembly, test with clean air first to confirm there are no leaks before spraying paint.