1" Weco Hammer Union Seal (Buna-N) | Standard Service Elastomer Seal Ring

The 1" Weco Hammer Union Seal manufactured from premium Buna-N (Nitrile) is a critical replacement component engineered to ensure a secure, leak-free connection in high-pressure flowline assemblies. Designed to fit precisely into 1-inch Weco-style hammer unions, this elastomer seal ring acts as the primary pressure barrier between the male and female subs, preventing fluid bypass and protecting the integrity of your flow control system.

Constructed from high-grade Buna-N (Nitrile / NBR), this seal is the industry standard for general-purpose oilfield applications. Buna-N offers exceptional resistance to petroleum-based oils, synthetic lubricants, water, and drilling muds. The seal features a highly effective lip design that is pressure-energized; as line pressure increases, the lips of the seal are forced outward against the metal mating surfaces of the union, tightening the seal and preventing leaks even under severe vibration and flow rates.

Ideal for standard service environments, this 1" hammer union seal provides excellent extrusion resistance and durability, ensuring your flowline equipment operates safely and efficiently during cementing, fracturing, acidizing, and well-testing operations.

Features & Benefits

• Pressure-Energized Lip Design: Utilizes internal flowline pressure to actively press the seal against the union's metal surfaces, creating a blowout-proof barrier.

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

• Standard Service Reliability: Engineered for standard oilfield operations with an excellent balance of tensile strength and abrasion resistance.

• Precision Fit: Manufactured to exact tolerances to ensure seamless, drop-in compatibility with standard 1" Weco-style hammer unions (including Fig 1502 and similar profiles).

• Cost-Effective Maintenance: Allows for quick, in-field replacement of worn seals, extending the lifespan of expensive hammer union assemblies without the need for full replacement.

Specifications & Technical Details

Applications

The 1" Buna-N Weco Seal is a staple component for high-pressure flowline maintenance. It is widely used in standard-service applications involving cementing lines, choke and kill manifolds, acidizing and fracturing flowlines, testing equipment, and general pump discharge lines where reliable, rapid make-up connections are required.

Quality Assurance

Each batch of our Buna-N union seals undergoes strict quality control checks to verify dimensional accuracy, material durometer (hardness), and structural integrity. This ensures every seal delivers consistent, reliable performance in demanding oilfield conditions and resists premature wear or extrusion.

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