PPG qualifies classes of eco-friendly aerospace sealant

PPG’s aerospace business has completed qualification of all three grades of its non-chromate corrosion-inhibiting sealant that provides commercial, general aviation and military aircraft manufacturers, as well as maintenance, repair and overhaul shops with faster cure to reduce application cycle time for significant cost savings.

Since initial launch of lightweight, eco-friendly PRC PR-2870 aerospace sealant in Class B for most-common extrusion applications, PPG has qualified additional viscosities for application by brush (Class A) and roller (Class C). A replacement option for PRO-SEAL 870 sealant, PR-2870 sealant uses PPG-patented technologies to inhibit corrosion on metal in aerodynamic smoothing, structural surface sealing, fay sealing and pressure fuselage sealing aircraft applications.

According to Bill Keller, PPG Global Segment Manager for aerospace sealants, PPG is the first manufacturer to offer a fully qualified chromate-free corrosion-inhibiting aerospace sealant in all three classes.

"PR-2870 sealant has received exceptional marketplace acceptance because of its light weight and process benefits as a viable alternative for chromated sealants, with several commercial and general aviation customers qualifying it,” Keller said.