Lennox 33N63 - SF 686 UL 181B-FX Listed/Printed ShurMASTIC® Butyl Foil Tape, 3" x 100', Silver Printed
The Lennox 33N63 ShurMASTIC® Butyl Foil Tape is a high-performance sealing solution designed for demanding HVAC applications. This tape is UL 181B-FX listed, ensuring full compliance with safety and performance standards for flexible air duct and air connector systems. With its aggressive butyl rubber adhesive and durable foil backing, it delivers long-lasting adhesion and a reliable air-tight seal in a wide range of environments.
Key Features:
- Part Number: 33N63
- Product Type: ShurMASTIC® Butyl Foil Tape
- Dimensions: 3 inches wide x 100 feet long
- Color: Silver with printed UL compliance
- Adhesive: Premium butyl rubber adhesive for superior hold
- Backing: High-tensile foil for durability and vapor barrier performance
- UL Listing: UL 181B-FX printed, approved for sealing flexible ducts and connectors
- Temperature Range: Maintains integrity in a wide range of temperatures
- Application: Ideal for HVAC duct sealing, insulation seams, and other demanding sealing jobs
- Provides a permanent, airtight seal on flexible ductwork
- High tack and quick adhesion on metal, plastic, and insulation surfaces
- Resistant to moisture, UV, and aging—ideal for indoor and outdoor applications
- Printed to meet code requirements for professional installations