Description
Product Overview
The EMSEAL AST All-Purpose Foam Sealant Tape is engineered to provide a high‑performance, open‑cell polyurethane barrier that conforms to the dynamic movements of metal structures. Designed specifically for industrial and scientific applications, this tape combines a resilient foam core with a self‑adhesive backing, allowing it to seal gaps, joints, and penetrations without the need for additional fasteners. The 4‑meter black roll offers ample length for large projects while maintaining a compact 13.12 × 9.84 × 9.84 inch package footprint, weighing just 11.2 ounces, making it easy to handle and store. Manufactured by EMSEAL, a trusted name in sealing solutions, the product carries the model number 720363 and meets rigorous industry standards for joint sealants.
![[Product front view showing all components]](https://www.yovixa.store/wp-content/uploads/2026/07/078964996eba4dfcaaafeea20180c94c.jpg)
Usage
Ideal for sealing metal building joints, roof runoffs, ridges, doorways, windows, skylights, and any static application where moisture, dust, or wind‑blown elements could infiltrate, this tape excels in both new construction and retrofit scenarios. Its open‑cell structure absorbs the natural expansion and contraction caused by temperature fluctuations, making it perfect for expansion/compression joints in HVAC ducts, louvers, vents, and eaves. Installers can apply the tape directly to clean, dry surfaces; the pressure‑sensitive adhesive adheres instantly, eliminating the need for solvents or heat. Whether you are sealing a commercial warehouse roof drain, a residential garage door frame, or a solar panel mounting flange, the tape provides a reliable, long‑lasting seal.
Why Choose Us
Choosing EMSEAL means selecting a product backed by decades of research and a reputation for durability. The foam core is UV‑stable, ensuring that prolonged sun exposure does not degrade performance—a critical factor for exterior applications. The tape’s open‑cell design not only accommodates movement but also allows air to circulate, preventing moisture buildup that can lead to corrosion. EMSEAL’s quality assurance processes include rigorous testing for tensile strength, elongation, and weather resistance, guaranteeing that each roll meets the specifications outlined in the product data sheet. Additionally, the brand offers responsive customer support and a clear warranty policy, giving users confidence that any concerns will be addressed promptly.
Key Features
- Resilient open‑cell polyurethane foam absorbs expansion and contraction, protecting joints from weather‑induced stress.
- UV‑stable formulation maintains performance under direct sunlight for years without cracking or hardening.
- Self‑adhesive backing enables quick, tool‑free installation, reducing labor time and costs.
- Versatile application across roofs, vents, doors, windows, and mechanical seams for both new builds and retrofits.
- Dedicated EMSEAL customer support and warranty ensure peace of mind and reliable after‑sales service.
FAQ
Can the tape be used on non‑metal surfaces?
While the tape is optimized for metal substrates, it adheres well to many clean, non‑porous surfaces such as glass, certain plastics, and coated wood, provided the surface is dry and free of contaminants.
How does the tape perform in extreme temperatures?
The polyurethane foam remains flexible from -30 °C to +80 °C, allowing it to expand and contract without losing its seal, making it suitable for both cold‑climate warehouses and hot‑sun exposed rooftops.
Is the tape removable if I need to re‑seal a joint?
The adhesive is pressure‑sensitive, so it can be peeled off gently without damaging the underlying material. For best results, clean the surface before re‑application.
What warranty does EMSEAL provide for this product?
EMSEAL offers a limited one‑year warranty against material defects and performance degradation under normal use conditions, backed by responsive technical support.
Can the tape be painted over after installation?
Yes, the tape’s surface can be painted with most exterior‑grade paints once the adhesive has fully cured, typically after 24 hours, allowing it to blend seamlessly with surrounding structures.




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