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Description

Ultrabond 2B – Two‑Component Polyurethane Air Block Resin for Telecoms

Ultrabond 2B is a two‑component polyurethane compound specifically formulated for use in the construction of horizontal and vertical air blocks in pressurised telecommunications cables. It is designed to create a robust, airtight seal within cable joints and closures, preventing the migration of air and moisture along the cable core and helping to maintain system integrity over time.

The resin system is intended for use by telecoms contractors and jointers working on pressurised cable networks, where reliable air blocking is critical to protect against water ingress, reduce the risk of faults, and extend the service life of underground and aerial cable infrastructure. When mixed and applied correctly, 2B forms a solid, durable barrier that remains stable within the cable environment.

As part of the Ultrabond range from MW Polymers Products Ltd, 2B is engineered to meet the demanding requirements of modern telecommunications networks, offering consistent performance in both horizontal and vertical orientations within cable joints and closures.

Key Benefits

• Purpose‑designed for telecom air blocks – Specifically formulated for constructing horizontal and vertical air blocks in pressurised telecoms cables.

• Reliable, long‑term seal – Creates a durable, airtight barrier that helps prevent air and moisture migration along the cable core.

• Suitable for multiple orientations – Effective in both horizontal and vertical applications within cable joints and closures.

• Consistent performance – Engineered for use in demanding telecom infrastructure environments.

• Easy to integrate into jointing procedures – Designed to fit within standard cable jointing and closure workflows.

Typical Applications

Ultrabond 2B is used by telecoms contractors and network operators for:

• Construction of horizontal air blocks in pressurised telecommunications cables

• Construction of vertical air blocks within cable joints, closures, and termination points

• Sealing and blocking within underground and aerial cable infrastructure to prevent air and moisture migration

• Maintenance and upgrade works on pressurised cable networks where existing air blocks must be repaired or replaced

How It Works

Ultrabond 2B is supplied as a two‑component polyurethane system. The two parts are mixed immediately before use to initiate the curing reaction. The mixed resin is then applied or injected into the cable joint or closure in the designated air block zone, where it expands and cures to form a solid, airtight mass.

Once cured, the 2B compound acts as a permanent barrier within the cable, preventing the longitudinal movement of air and moisture along the core. This helps maintain pressure integrity, reduces the risk of water‑related faults, and supports the long‑term reliability of the cable network.

Technical & Compliance Information

Ultrabond 2B is part of the Ultrabond range from MW Polymers Products Ltd, designed for use in pressurised telecommunications cable systems.

For full technical data sheets, mix ratios, cure profiles, and application instructions, contact the Ultrabond technical team or submit an enquiry via the product form.