PPG PS870 C-12 Corrosion Inhibitive Sealant

A corrosion-inhibiting sealant is a material designed for preserving metal surfaces against the effects of corrosion, especially for aluminum alloys or dissimilar metal interactions. This type of sealant provides a barrier that prevents the metals from being directly in contact with environmental elements that promote corrosion; these elements include moisture, oxygen, and aggressive chemicals. Corrosion is a destructive mechanism that can compromise and degrade metals, but corrosion is especially problematic for aluminum alloys or the interaction between dissimilar metals, as these materials form the rust or a galvanic reaction more efficiently. The corrosion-inhibiting sealant provides a layer that decreases the corrosion rate and extends the life of the metal components by limiting the environmental factors contributing to corrosion.

Corrosion-inhibiting sealants are especially prevalent in the aerospace and automotive industries and are sometimes used otherwise when aluminum alloys or dissimilar metals are exposed to extreme temperatures and humidity. In addition to decreasing the corrosion rates, these sealants also enhance component reliability, enabling safe and long-term functional output of metal structures.