PPG Semco 220550 Model 440 Polyethylene Sealant Gun Nozzle – 1/8 Orifice x 4 Inch
The PPG Semco 220550 is a standard polyethylene disposable sealant application nozzle designed for use with the Semco Model 440 aerospace sealant gun system. The 1/8 inch orifice provides a medium-diameter sealant bead suitable for fillet sealing, injection sealing of lap joints, and bead sealing applications commonly encountered in aircraft fuel tank and structural sealing operations.
Semco sealant guns and nozzles are the industry standard for aerospace two-part polysulfide and polythioether sealant application, providing consistent, controlled sealant delivery for production and MRO sealing work. The polyethylene nozzle material is chemically resistant to aerospace polysulfide and polythioether sealants, preventing nozzle degradation or contamination of the sealant during application.
The 4 inch length provides reach into panel joints, corners, and confined spaces encountered in fuel tank and structural sealing work, while the 1/4 NPT male thread provides a secure, leak-free connection to the Semco Model 440 gun body. Disposable polyethylene nozzles eliminate the need for nozzle cleaning between sealant applications, reducing labor and material waste associated with nozzle cleaning solvents.
| Attribute | Detail |
|---|---|
| Manufacturer Part Number (MPN) | 220550 |
| Brand | PPG Semco |
| Compatible Gun | Semco Model 440 |
| Material | Polyethylene |
| Orifice Diameter | 1/8 inch |
| Length | 4 inches |
| Thread Connection | 1/4 NPT Male |
| Product Type | Sealant Gun Nozzle — Disposable |
| Sealant Compatibility | Polysulfide, Polythioether Aerospace Sealants |
| Industry Use | Commercial Aviation, Military, MRO |
Technical Information
The Model 440 nozzle uses a 1/4 NPT male thread that mates directly with the Semco Model 440 gun body’s female NPT receiver, providing a positive mechanical connection that prevents nozzle separation during application under gun pressure. The NPT taper thread seals against sealant leakage at the nozzle-gun connection without additional sealing tape or compound when properly tightened.
Polyethylene is selected as the nozzle material for its combination of sealant resistance, flexibility, and low cost enabling economical disposable use. The material does not react with polysulfide or polythioether sealant chemistry, ensuring no nozzle degradation products contaminate the sealant bead during application. The slight flexibility of polyethylene also allows the nozzle tip to be bent slightly for application in difficult-to-reach joint locations.
The 1/8 inch orifice diameter represents the most commonly used bead size for general aerospace fillet and injection sealing applications. For wider beads, Semco offers nozzles with larger orifice diameters. Nozzle selection should match the required sealant bead cross-section specified in the applicable assembly drawing or maintenance manual for the joint being sealed.
Why Choose Semco 220550 Nozzle?
- ✅ Industry Standard — Semco sealant guns are the aerospace industry benchmark
- ✅ Disposable Polyethylene — No cleaning required, eliminates solvent waste
- ✅ 1/8 Orifice — Versatile medium bead for most fillet and injection sealing
- ✅ 4 Inch Length — Reach into confined joint and fuel tank access locations
- ✅ 1/4 NPT Connection — Secure, positive fit on Semco Model 440 gun
Applications and Compatible Aircraft
Semco Model 440 nozzles with 220550 specifications are used in aircraft fuel tank sealing, structural fillet sealing, and sealant injection operations on all commercial and military aircraft types where Semco gun-applied aerospace sealants are specified in the production or maintenance process.
Frequently Asked Questions
Q: What gun is Semco 220550 nozzle compatible with?
A: The 220550 nozzle is designed for the PPG Semco Model 440 sealant gun. Verify compatibility with your specific Semco gun model before ordering.
Q: What orifice size is the Semco 220550 nozzle?
A: The 220550 nozzle has a 1/8 inch orifice diameter, providing a medium bead size suitable for most aerospace fillet and injection sealing applications.
Q: Is Semco 220550 a reusable or disposable nozzle?
A: The 220550 polyethylene nozzle is designed as a disposable, single-use nozzle that is replaced rather than cleaned between sealant applications.
Q: What is the thread type on the Semco 220550 nozzle?
A: The 220550 nozzle has a 1/4 NPT male thread for connection to the Semco Model 440 gun body.
Q: What is the MPN for Semco Model 440 nozzle 1/8 orifice?
A: MPN is 220550.
Reviews
There are no reviews yet.