Barrier Seal System
Dual Mechanical Seal Barrier Fluids
Dual mechanical seal systems depend on the barrier fluid circulating between the seal faces to lubricate, cool and protect the seals in continuous operation — and barrier fluid selection directly affects seal reliability, service life and containment integrity. NEXT Lubricants supplies barrier fluids for dual mechanical seal systems across chemical processing, pharmaceutical manufacturing, water treatment, food processing and general industrial rotating equipment applications.
Knowledge
Barrier Fluid Considerations for Dual Mechanical Seal Systems
Thermal Stability & Viscosity at Operating Temperature
The barrier fluid must maintain adequate viscosity at the seal chamber operating temperature throughout its service life — thermal degradation over time reduces lubricity at the seal faces and increases the risk of seal face wear and premature failure.
Process Fluid & Seal Material Compatibility
In the event of inner seal leakage, the barrier fluid contacts the process fluid — compatibility between the barrier fluid and the process being pumped must be assessed alongside compatibility with the seal face materials and elastomers specified for the application.
Safety in Outer Seal Leakage
In hazardous process service, the outer seal represents the final containment barrier — the barrier fluid itself must be safe to handle and low in toxicity so that minor outer seal leakage does not create a secondary hazard at the seal support system.
products
Dual Mechanical Seal Barrier Fluids
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