2" Weco Hammer Union Seal (Brass Insert & Buna-N) | Anti-Extrusion Flowline Seal Ring

The 2" Weco Hammer Union Seal featuring a precision-machined Brass insert and premium Buna-N (Nitrile) elastomer is a heavy-duty sealing solution engineered for high-pressure flowline applications. Designed for a seamless fit into standard 2-inch Weco-style hammer unions (such as the widely used Figure 1502), this composite seal ring provides superior protection against fluid bypass and seal blowout in demanding oilfield environments.

The foundation of this seal is molded from high-grade Buna-N (Nitrile / NBR), providing excellent resistance to petroleum-based fluids, water, and abrasive drilling muds. What sets this seal apart is the integration of a rigid Brass Anti-Extrusion Ring. During extreme pressure spikes and high-velocity flow, the softer rubber lip can be pushed into the union's clearance gap. The brass backup ring acts as a structural reinforcement, effectively blocking the elastomer from extruding and ensuring the pressure-energized lip maintains a tight, dynamic seal against the metal mating surfaces.

Additionally, the brass construction offers a non-sparking metallic option, making it an excellent choice for environments where safety and blowout prevention are paramount. Ideal for high-pressure standard service, this 2" Brass/Buna Weco seal extends the operational life of your flowline connections.

Features & Benefits

• Brass Anti-Extrusion Ring: Integrated metal backing reinforces the seal, entirely preventing elastomer extrusion and blowout under severe pressure surges.

• Non-Sparking Insert: The brass construction provides structural rigidity while offering a safer, spark-resistant alternative to steel inserts in specific operational environments.

• Premium Buna-N Elastomer: Formulated from high-quality Nitrile rubber for superior resistance to oil, gas, water, and abrasive fracturing or drilling fluids.

• Pressure-Energized Geometry: Utilizes internal line pressure to actively expand the sealing lips against the union's surfaces, establishing a barrier that strengthens as pressure increases.

• Exact Fitment: Precision manufactured to ensure a perfect, drop-in fit for standard 2" Weco-style hammer unions, allowing for rapid in-field replacement.

Specifications & Technical Details

Applications

This 2" Brass/Buna Weco Seal is highly recommended for extreme-pressure standard service flowline environments. Typical applications include cementing and circulating lines, fracturing manifolds, high-pressure pump discharge lines, and well-testing equipment where standard rubber seals are prone to blowout or premature extrusion failure.

Quality Assurance

Every composite hammer union seal undergoes rigorous quality control. The Buna-N elastomer is tested for optimal durometer (hardness) and chemical resilience, while the brass anti-extrusion rings are dimensionally inspected for exact tolerances. The final assembly is evaluated to guarantee strong cohesion between the brass ring and the rubber, ensuring flawless performance in the field.

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