3M 2229 Self-Sealing Mastic Tape, 3-3/4" x 10FT

3M 2229 Self-Sealing Mastic Tape, 3-3/4" x 10FT

3M 2229 Mastic Tape is a self-sealing, rubber-based mastic tape engineered for sealing and insulating electrical splices, connections, and mechanical joints in commercial, industrial, and utility environments. Supplied in a 3-3/4" x 10FT roll, this tape provides ample material for wrapping cable connections, conduit joints, and other irregular surfaces that require a continuous, moisture-tight seal. The soft, pliable mastic compound conforms readily to uneven surfaces and fuses to itself as it is applied, forming a weatherproof barrier without the need for heat, solvents, or special tools. Electricians and maintenance crews rely on mastic tape products like the 3M 2229 to protect exposed connections from moisture intrusion, corrosion, and general environmental exposure, helping extend the service life of critical electrical joints.

Key Features

• Trade Size: 3-3/4" x 10FT roll delivers ample coverage for wrapping splices, joints, and irregular connection points.
• Self-Sealing Mastic Compound: Soft, pliable mastic fuses to itself layer over layer, forming a continuous, moisture-tight seal.
• Weatherproof Barrier: Helps protect electrical and mechanical connections from moisture intrusion, corrosion, and environmental exposure.
• Conforms to Irregular Surfaces: Pliable construction wraps easily around connectors, cable ends, and uneven joints.
• No Heat or Tools Required: Hand-applied for fast, straightforward field installation.
• Generous Roll Length: The 10FT roll length supports multiple wraps or larger sealing jobs without frequent tape changes.
• General-Purpose Versatility: Suitable for a wide range of sealing and insulating tasks beyond standard splice protection.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Electrical Splice and Connection Sealing
• Conduit and Cable Joint Sealing
• Outdoor and Wet-Location Sealing Applications
• Corrosion and Moisture Protection Wraps
• General-Purpose Mastic Sealing Tasks
• Commercial, Industrial, and Utility Electrical Work

Why 3M?

3M is a trusted manufacturer of electrical tapes and sealing products relied upon by professionals across commercial, industrial, and utility applications. The 2229 Mastic Tape's self-sealing compound and generous 3-3/4" x 10FT roll size make it a practical, reliable choice for creating durable, moisture-resistant seals on splices, joints, and connections in the field. Choosing 3M sealing products helps ensure consistent performance and long-term protection for critical electrical connections.