The Graco CST421 RS Airless Spray Gun Tip is designed for precise application of fiberglass resins and gelcoat, delivering consistent performance in demanding composite spraying tasks.
The Graco CST421 0.021 In Orifice RS Airless Spray Gun Tip with 8 in Pattern Width is specifically designed for use with RS (Resin Spray) systems used in fiberglass and composite applications.
The Graco CST421 is a high-performance RS airless spray gun tip engineered for precise application of fiberglass resins, gelcoat, and other composite materials. With a 0.021-inch orifice and an 8-inch fan pattern, it delivers a consistent and controlled spray, making it ideal for medium to heavy material applications.
Built for durability and efficiency, this tip allows for quick replacement, reducing downtime during demanding industrial operations. It is not intended for standard paint sprayers and is exclusively compatible with RS system spray equipment.
| Orifice Size | 0.021 inch |
| Fan Pattern Width | 8 inches |
| Tip Type | RS (Reverse Spray) |
| Application | Fiberglass, Resin, Gelcoat |
| Compatibility | RS / FRP Spray Systems Only |
In the 421 tip designation, the first digit (4) represents the fan width (approximately 8 inches), while the last two digits (21) indicate the orifice size (0.021 inches). This combination ensures balanced coverage and efficient material flow.
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