3" Weco Hammer Union Seal (Brass Insert & Buna-N) - Import | Cost-Effective Anti-Extrusion Seal

The 3" Weco Hammer Union Seal (Import) featuring a precision-machined Brass insert and Buna-N (Nitrile) elastomer is a highly economical, heavy-duty sealing solution engineered for high-volume, high-pressure flowline applications. Designed to fit seamlessly into standard 3-inch Weco-style hammer unions, such as Figure 1502 profiles, this composite seal ring provides critical protection against fluid bypass and catastrophic seal blowout while offering a budget-friendly option for operations requiring frequent maintenance turnarounds.

Sourced from our trusted international manufacturing partners, this "Import" line is carefully selected to deliver exceptional commercial value without compromising essential field safety on large-bore flowlines. The core sealing element is molded from high-grade Buna-N (Nitrile / NBR), providing excellent, dependable resistance to petroleum-based fluids, water, and abrasive drilling muds. Crucially, it features an integrated, rigid Brass Anti-Extrusion Ring. During extreme pressure spikes and high-velocity fluid transfers common in 3-inch lines, this non-sparking metallic backup ring structurally reinforces the elastomer lip, completely preventing it from extruding into the clearance gap of the union.

Ideal for cost-conscious operators seeking to balance operational budgets with high-pressure reliability, this 3" Brass/Buna Import Weco seal is the perfect choice for standard service flowline connections that handle significant fluid volumes and require dependable extrusion resistance.

Features & Benefits

• Cost-Effective Value: An economical "Import" alternative that reduces maintenance overhead for high-volume, large-bore flowline operations without sacrificing seal integrity.

• Brass Anti-Extrusion Ring: Integrated metal backing entirely prevents elastomer extrusion and blowout under severe pressure surges and high fluid velocities.

• Buna-N Elastomer: Formulated from Nitrile rubber for dependable 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 mating surfaces, creating a dynamic barrier that strengthens as pressure increases.

• Exact Fitment: Precision manufactured to ensure a perfect, drop-in fit for standard 3" Weco-style hammer unions, allowing for rapid in-field replacements.

Specifications & Technical Details

Applications

This 3" Brass/Buna Import Weco Seal is recommended for standard service flowline environments where cost-efficiency, high flow volumes, and volume replacement are key priorities. Typical applications include high-capacity cementing and circulating lines, fluid transfer manifolds, high-pressure pump discharge lines, and general well-servicing equipment requiring robust extrusion resistance.

Quality Assurance

While part of our highly competitive import line, these large-bore seals are still subjected to strict batch-testing protocols. We verify the Buna-N durometer (hardness) and dimensionally inspect the brass anti-extrusion rings to ensure they meet the rigorous tolerance standards necessary to protect your field personnel and flowline infrastructure.

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