What should be checked for coolant and material compatibility?

Support / Technical answers

What should be checked for coolant and material compatibility?

Direct, data-backed answers to the questions that matter before and during deployment.

Coolant and wetted materials (metals, seals, hoses, fittings) decide system life: leachables foul microchannels and corrosion products block flow. Run leaching, permeation and aging tests before selection; common media are ethylene/propylene glycol solutions and pure water; seals are EPDM or FKM per media.

01

Why compatibility matters

Incompatibility causes corrosion (pitting, galvanic), swelling (seal failure), leaching (contaminated coolant) and deposition (blocked microchannels). It does not stop the system immediately but erodes it over time.

02

How to verify

Run immersion tests at the actual media and temperature: metal weight loss and surface state, seal hardness and dimensions, coolant leachables. Compatibility data ships with the components.

03

What to watch

Glycol solutions are mixed to the minimum ambient temperature (e.g. -40 °C); mixed metals invite galvanic corrosion; water quality (conductivity, pH, particulates) goes into routine testing.