Description

Relatherm SC — Heavy Duty Heat Transfer System Cleaner | USA Lab

Relatherm SC is a fast-acting, emergency heat transfer system cleaner formulated to soften, dissolve, and remove hard carbon deposits and sludge from fouled thermal oil systems. Use it during emergency shutdowns or planned outages to restore heat transfer performance and efficiency by clearing fouling from wetted surfaces.

This potent cleaner is applied at a 100% system volume treat rate and is not a heat transfer fluid. It is low odor, safe to circulate to 65 °C (150 °F), and is designed to be followed by a dedicated flush with RelaFlush Fluid prior to refilling with new thermal oil.

Results are typically noticeable within hours, helping plants quickly recover heat transfer efficiency and reduce unplanned downtime.

Use appropriate PPE. Hot thermal fluids can cause burns.
Not suitable for use as a heat transfer fluid.

Treat Rate: 100% System Volume Max Use Temp: 65 °C / 150 °F Low Odor / No Fumes Flush After: RelaFlush

Rapid restoration: Dissolves coke and sludge to recover heat transfer efficiency within hours.

Emergency-ready: Ideal for severely fouled systems during shutdowns or planned outages.

Straightforward use: Charge at 100% system volume, circulate to 65 °C (150 °F), then flush.

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Relatherm SC TDS Relatherm SC SDS

Why choose Relatherm SC?

Potent system cleaner — formulated to remove hard carbon deposits and sludge from heat transfer surfaces.
Fast, visible results — efficiency gains often noticeable within hours of circulation.
Simple application — dose at 100% of system volume, heat to 150 °F (65 °C), circulate 4–6 hours.
Low odor, safer handling — no unpleasant fumes; use standard PPE and follow hot oil safety practices.
Complete maintenance workflow — drain, clean with Relatherm SC, flush with RelaFlush, then refill with fresh thermal fluid.

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Get help selecting volumes, runtime, and a proper flush-and-refill procedure for your system.

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Technical Specifications

Model	Relatherm SC — Heavy Duty System Cleaner
Product Type	Heat transfer system cleaner (not a heat transfer fluid)
Application	Removal of coke/carbon deposits and sludge in fouled thermal oil systems
Treat Rate	100% of system volume
Maximum Use Temperature	65 °C (150 °F)
Circulation Time	4–6 hours at ~65 °C (150 °F) after 1–3 hour soak
Odor/Fumes	Low odor, no unpleasant fumes
Post-Cleaning Step	Flush entire circuit with RelaFlush; then charge fresh thermal oil
Compatibility	Thermal oil systems during shutdowns and maintenance outages
PPE Guidance	Use heat-resistant gloves, face/eye protection; observe hot oil safety
Limitations	Do not use as a circulating heat transfer fluid

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FAQ

How do I use Relatherm SC?

Drain existing thermal oil, install a mesh screen in the Y-strainer, charge Relatherm SC at 100% of system volume, allow a 1–3 hour soak, then heat and circulate at ~150 °F (65 °C) for 4–6 hours. Drain warm.

Do I need to flush after cleaning?

Yes. After draining the cleaner, flush with RelaFlush Fluid to remove residual contaminants before refilling with fresh heat transfer fluid.

Is Relatherm SC a heat transfer fluid?

No. Relatherm SC is a system cleaner only and should not be used as a heat transfer fluid.

What safety precautions are recommended?

Use appropriate PPE including heat-resistant gloves and face/eye protection. Hot thermal fluids can cause serious burns; follow your facility’s hot oil safety procedures.

What if my system is severely fouled?

Relatherm SC is designed for heavily fouled systems. You may repeat the clean/flush cycle if deposits persist, then validate flow and heat transfer before returning to service.