Garlock Abra-Shield expansion joint material designed for abrasion protection

Palmyra, NY-based Garlock Sealing Technologies, a manufacturer of high-performance fluid sealing products, has launched Abra-Shield™, a proprietary expansion joint liner material designed for abrasion resistance and sustainability in high-temperature operating conditions.

Abra-Shield joins Abra-Line and natural rubber to provide a variety of liners catering to increased abrasion protection.

Abra-Shield will be an option for use with a number of Garlock’s expansion joint products including styles 204, 206, 7250, 8400 and 9394. These uniquely constructed joints also provide high levels of protection from stress, misalignment, vibration, noise, shock and corrosion, says the company.

Media type and temperature play a significant role in the selection of expansion joint liner material. The specialty formulated hydrogenated nitrile butadiene rubber used in Abra- Shield performs significantly better than common abrasion resistant solutions, with an operating temperature range up to 300°F.

In abrasion resistance testing – which provides data to compare materials and predict the lifetime of a material or coating – Abra-Shield provided 50% higher abrasion resistance than standard EPDM (ethylene propylene diene monomer rubber). Abra-Shield will be the recommended solution in abrasive applications (such as slurry, ash and brine) with sustained or spiked temperatures between 180°F and 300°F. For temperatures outside this range, other materials in Garlock’s family of abrasion resistant expansion joints would be suggested.

This performance in challenging environments will be advantageous for applications across a range of industries, including pulp/paper, metals/minerals, oil/gas, power generation, hydrocarbon processing and chemical processing.


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