2" Weco Hammer Union Seal (HNBR) | High-Performance & Sour Service Seal Ring

The 2" Weco Hammer Union Seal manufactured from premium HNBR (Hydrogenated Nitrile Butadiene Rubber) is an advanced elastomer sealing solution engineered for severe oilfield environments where standard rubber compounds fall short. Designed for a precise, drop-in fit into 2-inch Weco-style hammer unions, including the widely used Figure 1502, this high-performance seal acts as the ultimate pressure barrier against abrasive, high-temperature, and chemically aggressive fluids.

The defining characteristic of this seal is its HNBR construction. Through the hydrogenation process, standard Nitrile is upgraded to provide vastly superior mechanical strength, excellent abrasion resistance, and enhanced thermal stability. This makes the HNBR seal highly resilient against synthetic oil-based drilling muds, harsh completion fluids, and elevated temperatures. Furthermore, HNBR provides excellent resistance to sour gas (H2S), making it an ideal choice for moderate sour service applications where maintaining a blowout-proof connection is critical.

Featuring a pressure-energized lip design, the seal utilizes internal flowline pressure to actively push the elastomer lips outward against the union’s mating surfaces. This dynamic action ensures a bubble-tight, leak-proof seal that strengthens as operational demands increase.

Features & Benefits

• Premium HNBR Material: Hydrogenated Nitrile provides vastly improved tensile strength, tear resistance, and abrasion resistance compared to standard Buna-N.

• Enhanced Chemical & Heat Resilience: Withstands degradation from synthetic drilling muds, corrosive completion fluids, and operates reliably in elevated temperatures up to 300°F.

• Sour Service Capable: Offers strong resistance to hydrogen sulfide (H2S), making it suitable for moderate sour service environments.

• Pressure-Energized Lip Design: Actively expands against the metal union faces as line pressure increases, ensuring a blowout-proof barrier.

• Precision Fit: Manufactured to exact tolerances for seamless compatibility with standard 2" Weco-style hammer unions (Fig 1502 profiles).

Specifications & Technical Details

Applications

The 2" HNBR Weco Seal is highly recommended for severe-service flowline operations. It is widely utilized in high-pressure fracturing manifolds handling abrasive proppants, cementing lines using aggressive chemical additives, high-temperature pump discharge lines, and flowline systems exposed to synthetic drilling muds or moderate H2S concentrations.

Quality Assurance

Each batch of our HNBR union seals undergoes rigorous quality control to verify dimensional accuracy, elevated material durometer, and chemical composition. This guarantees that every seal provides maximum extrusion resistance and chemical stability, delivering reliable performance and extending maintenance intervals in harsh oilfield conditions.

Request a Quote

📞 +1 405 666 5011

📧 seo@blazess.com