Polyurethane O-Rings

Polyurethane O-Rings

Polyurethane O-Rings (HPU O-Rings) offer exceptional performance in high-pressure and dynamic sealing applications where traditional elastomers fall short. These seals combine the abrasion resistance of polyurethane with the high resilience and low compression set characteristics typically found in nitrile polymers. The result is a durable, long-lasting O-ring that resists wear, deformation, and extrusion even in demanding mechanical environments.

Performance & Design Benefits:

The HPU O-Ring design allows for simplified installation by minimizing the risk of damage due to spiral failure—a common issue with traditional elastomers during assembly. Their excellent dimensional stability under pressure can eliminate the need for back-up rings, offering both cost savings and design simplification. These seals are particularly effective in hydrostatic testing, providing reliable sealing under extreme test conditions.

Hydrostatic Testing – The Ideal Seal:

HPU O-Rings are specifically recommended for shell hydrostatic testing applications. They provide a secure, leak-proof seal that withstands sudden pressure spikes and repeated usage. The robust nature of polyurethane ensures a longer lifespan, even under the intense stresses of pressure testing, making them the preferred choice over conventional elastomers or metal gaskets in many industrial testing scenarios.

Thermoplastic Ring Joint Seals – Reusable Advantage:

In addition to O-Rings, we also offer BX, Ring Joint, and NORSOK L005 seals manufactured from specialized thermoplastic materials. These advanced seals offer quick installation without the need for hydraulic bolt tensioning tools, avoiding damage to counterflange grooves. Their standout feature is full reusability—up to 25 times, drastically reducing maintenance time and material costs in high-cycle applications.

Applications & Advantages:

These sealing solutions are ideal for use in:

• Hydrostatic testing

• High-pressure flanged connections

• Subsea and topside equipment

• Pipeline and process systems

• Rework and refurbishment of large-diameter joints

Whether you need a high-performance O-ring for dynamic applications or a reusable ring joint seal for large bolted flanges, our polyurethane and thermoplastic seals deliver unmatched performance, longevity, and ease of use.