PPG Industries developed a chromate-free, lightweight sealant for corrosion-inhibitive military aircraft applications and is now making the product available to general aviation. According to Bill Keller, PPG Aerospace global segment manager for sealants, the eco-friendly sealant is designed as a replacement option for Pro-Seal 870 sealant. “PR-2870 sealant is a new-generation, corrosion-inhibitive sealant for aerodynamic smoothing, structural surface sealing, fay sealing and pressure fuselage sealing applications. It weighs 30 percent less by volume than Pro-Seal 870 sealant, has low specific gravity and is chromate-free.”