Upstream Pumping Seal Face Technology Helps Reduce Mechanical Seal Damage
Mechanical seal damage is one of the most common causes of pump reliability problems, especially in demanding services where pressure changes, abrasive fluids, scaling, or short seal life can create repeat failures.
John Crane’s Upstream Pumping Seal Face Technology is designed to help address many of these common failure points by using a non-contacting seal face design that improves seal resilience in difficult operating conditions.
What Makes Upstream Pumping Technology Different?
Upstream Pumping, also known as USP, uses spiral groove technology on the inboard seal face of a dual mechanical seal. These grooves help draw in and pressurize the barrier fluid, creating lift between the seal faces.
The result is a non-contacting seal face operation that reduces wear and helps the seal survive conditions that can damage traditional mechanical seals.
Common Seal Damage Problems USP Technology Helps Address
- Transient conditions: Sudden changes in speed, temperature, pressure, or pressure pulses can shorten seal life. USP technology helps cushion the seal faces with a stable fluid film.
- Reverse pressure events: Reverse pressure can cause severe wear or catastrophic seal face damage. USP technology is designed to avoid this failure mode.
- Abrasive services: In slurry or abrasive applications, clean barrier fluid helps protect the running surfaces of the seal faces from abrasive damage.
- Scaling: Because the seal faces operate without contact, they run cooler and are less likely to become a hot spot for scale buildup.
- Short seal life: USP technology can be a strong option for “bad actor” pumps where seals are failing in weeks or months.
A Practical Option for Problem Pumps
When a pump repeatedly damages mechanical seals, the issue is often more than just the seal itself. Operating conditions, pressure instability, abrasive process fluids, and support system challenges can all contribute to premature failure.
Upstream Pumping Seal Face Technology gives operators another way to improve reliability by reducing face contact, protecting against difficult service conditions, and simplifying the barrier fluid support system in many applications.
Talk with Tencarva About Mechanical Seal Reliability
Tencarva helps customers evaluate pump and mechanical seal challenges across industrial and municipal applications. If your facility is dealing with repeat seal failures, short seal life, or hard-to-handle process conditions, our team can help review the application and identify the right sealing solution.
Read the full John Crane article on Upstream Pumping Seal Face Technology.
