This Shurtape SF 685 ShurMASTIC butyl foil tape is designed for long-lasting HVAC sealing, moisture protection, and air-handling system performance. Built with a durable foil backing and pressure-sensitive butyl adhesive, it delivers strong adhesion on metal ducts, insulation, flex duct joints, and vapor barriers. Ideal for contractors seeking a UL-rated, high-performance mastic replacement tape with clean application and superior durability.

 

Key Features:

• Shurtape SF 685 ShurMASTIC butyl foil tape engineered for HVAC sealing and vapor barrier applications
• Printed silver foil backing for visibility and code compliance
• High-tack butyl adhesive bonds securely to metal, insulation, and duct surfaces
• Withstands moisture, temperature fluctuations, and harsh installation conditions
• Suitable for residential and commercial air-handling systems
• Excellent alternative to brush-on mastic for fast, clean sealing
• Lennox part number 46X82; manufacturer part number 200664

 

Specifications:

• Tape width: 2 inches
• Roll length: 100 feet
• Backing material: Foil (printed)
• Adhesive type: Butyl rubber
• Color: Silver (printed)
• Temperature rating: High-performance HVAC grade
• Application: Duct sealing, insulation seams, vapor barrier closure