Nitrile (NBR) Hammer Union Seal with Brass Back-up Ring for 10,000 PSI to 15,000 PSI High-Pressure Applications

Nitrile (NBR) Hammer Union Seals with Brass Back-up Rings

One: Product Overview and Functional Design

The Nitrile (NBR) Hammer Union Seal with a brass backup is a replacement component for identified oilfield unions. Match manufacturer, figure, nominal size, groove and lip profile before ordering. Review the NBR compound for the actual fluid and service. Select brass backup dimensions and retention from the drawing; the complete assembly determines its pressure rating.

Two: Material Characteristics and Advantages

NBR with a brass backup is a replacement construction option. Confirm the exact compound, ring dimensions and retention for the identified assembly.

Nitrile Rubber (NBR) Properties: Nitrile is the most widely used elastomer in the oil industry. It provides excellent resistance to hydraulic fluids, seal oils, and water. It is known for its high tensile strength and superior resistance to compression set.

Brass Back-up Ring Properties: Match the ring grade, dimensions, edges and retention to the approved assembly drawing. The backup supports the elastomer against extrusion; its material name alone does not establish pressure or ignition-safety qualification.

Three: Product Specifications Table

Four: Operating Performance Parameters Table

Five: Industry Application Range

These hammer union seals are utilized across various sectors of the energy industry where secure high pressure piping is required.

1. Drilling and Mud Services
In drilling operations, these seals are used in mud pump manifolds and suction lines. The NBR material handles the abrasive nature of drilling fluids while the brass ring maintains the seal against the constant vibration and pressure of the pumps.

2. Well Cementing and Acidizing
For cementing replacement, review the selected NBR compound against the complete slurry formulation, additives, temperature and exposure. Acidizing duty requires a separate compatibility review.

3. Hydraulic Fracturing
Confirm actual fluid additives, slurry conditions, pressure cycling and the approved backup arrangement for each replacement.

4. Water and Fluid Transfer
They are also widely used in general water transfer lines and low to medium pressure oil lines where a durable and easy to replace sealing solution is needed.

Six: Why Choose Our Nitrile Hammer Union Seals

We review supplied groove and seal drawings, compound requirements and backup construction before quotation. Agree dimensions, hardness tolerance and inspection documentation for the selected replacement configuration.

Seven: Company and factory introduction

Established in 2013 within the Shanghai Free Trade Zone, Qinuo is a high-tech enterprise specializing in rubber seal manufacturing for the Oil & Gas sector. We integrate R&D, production, and sales under our core philosophy: "Quality for Survival, Innovation for Development." This commitment has earned us recognition across global markets, where we currently promote our Royal Way and SHQN brands in the energy industry.

Qinuo provides professional design and production services for rubber parts, plastic components, and machined parts. Our solutions serve diverse sectors including oil & gas, automotive, home appliances, and industrial equipment. Guided by our principles of "High Quality, High Professionalism, High Efficiency," our dedicated team ensures excellence at every stage.

We operate two wholly-owned factories in Nantong City—strategically located just one hour from Shanghai Pudong Airport and Shanghai Port. Equipped with over 30 rubber vulcanization presses and supporting machinery, we produce more than 20 types of rubber seals and related products. Our monthly production capacity exceeds 20 tons (approximately 40,000 lbs), and we continue to expand rapidly.

Operating under a comprehensive ISO9001-based quality management system, we export to over 100 countries including the USA, Canada, UK, Germany, Finland, and Australia. We're confident in our ability to meet your requirements and look forward to a productive partnership.

NBR Seal and Brass Backup Replacement Matching

Record whether the brass backup is bonded, mechanically retained or supplied separately. Provide both seal-face photographs, the side profile and groove dimensions. Confirm ring position and fit from the manufacturer drawing rather than substituting a similar-looking ring. Specify one NBR compound, hardness tolerance and drawing revision for each figure-size configuration, together with fluid, temperature and pressure cycling.