Vybond 555S2 UL181B-FX Metallic Duct Seal Tape 2in 17mil 60yd

Product Description

The VYBOND 555S2 is a UL181B-FX listed metallic duct seal tape engineered for sealing flexible duct systems in residential and light commercial HVAC applications. It features a metallic foil backing combined with a high-tack mastic adhesive layer that forms a durable, long-term air and vapor seal at duct joints, collars, and transitions. The tape measures 17 mil total thickness, delivers approximately 60 ounces per inch of adhesion to steel, and handles service temperatures from -20 degrees F to 260 degrees F. HVAC technicians use this tape as a code-compliant solution wherever UL181B-FX listed closure systems are required on flex duct installations.

This tape is suited for sealing flexible duct joints, end connections, and transition fittings in forced-air heating and cooling systems. The UL181B-FX listing makes it acceptable under mechanical codes that require listed closure systems on Class 1 flexible air ducts and air connectors. It is appropriate for residential retrofits and new construction installs where a permanent, pressure-sensitive metallic tape closure is specified. Each unit includes one 60-yard roll, providing substantial coverage for a full system installation or service run.

Key Features

• UL181B-FX listed for use on flexible duct systems requiring a code-compliant closure
• 17 mil total tape thickness for robust, tear-resistant handling during installation
• High-tack mastic adhesive with approximately 60 oz/in adhesion to steel
• Wide service temperature range: -20 degrees F to 260 degrees F
• Metallic foil backing forms a durable air and vapor barrier at sealed joints
• 60-yard roll per unit provides generous coverage per job

Compatibility

Designed as a UL181B-FX listed closure for Class 1 flexible air ducts and air connectors in residential and light commercial forced-air HVAC duct systems.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with applicable mechanical codes, including SMACNA guidelines and local authority having jurisdiction requirements. Power down the air handling system before accessing duct connections. Surfaces must be clean, dry, and free of dust or grease for the adhesive to bond correctly. Do not stretch the tape during application, as distortion can reduce adhesion and compromise the seal.

Technical Specifications

• Listing: UL181B-FX
• Backing Material: Metallic foil
• Total Thickness: 17 mil
• Adhesion to Steel: Approximately 60 oz/in
• Service Temperature Range: -20 degrees F to 260 degrees F
• Width: 2 inches
• Roll Length: 60 yards
• Quantity per Unit: 1 roll

Standard Information

• Brand: VYBOND
• Manufacturer Part Number: 555S2