SPIFR #5 Metal Fire Retardant Open End Zipper

The #5 Metal Fire Retardant Open End Zipper is engineered for protective garments requiring full separation and reliable thermal stability. Its metal chain and flame-retardant tape maintain structural integrity and smooth operation under high-temperature exposure, making it suitable for firefighting outerwear, welding jackets, industrial uniforms, and petrochemical protective clothing.

Heat-Exposure Performance (260°C / 5 minutes)
• Ignition: None
• Melting or dripping: None
• Tape damage: Minimal, self-extinguishing
• Chain deformation: None
• Operational status: Fully functional after heating

The zipper remains stable under elevated temperatures, confirming its suitability for flame-resistant garment systems.

Vertical Flame Test (As-Received Tape)
• After-flame time: 0 seconds
• Char length: 2–4 mm
• Melting/dripping: None

The tape demonstrates rapid self-extinguishing behavior, with char lengths around 3 mm, significantly outperforming common FR requirements.

#5 Metal Chain Performance
• Balanced durability and flexibility
• Smooth sliding performance
• Good tensile/lateral strength
• Maintains functionality after heat exposure
• Suitable for medium-duty FR applications

Open-End Structure Advantages
• Designed for full separation
• Reinforced bottom box and pin
• Stable alignment after heating
• Ideal for jackets, coats, coveralls, welding wear, industrial uniforms, and heat-exposed equipment covers

Key Performance Advantages
• No ignition in thermal exposure
• No melting, dripping, or deformation
• Tape after-flame time: 0 seconds
• Very low char length (~3 mm)
• Smooth slider operation after testing
• Suitable for certified PPE and FR standards

Customization Options
• FR tape materials: aramid, modacrylic, FR polyester
• Tape and metal color customization
• Slider types: auto-lock, non-lock, semi-lock
• Puller customization (logo, shape)
• Metal finishes: nickel, brass, antique, matte, anti-corrosion
• Custom lengths for uniform manufacturing