Chrome-Free Aerospace Sealant Features Lightweight, Corrosion-Inhibiting Properties

PPG offers a chrome-free aerospace sealant designed for aircraft manufacturers and maintenance, repair and overhaul shops requiring corrosion-inhibiting properties.

Related Suppliers

PPG offers a chrome-free aerospace sealant designed for aircraft manufacturers and maintenance, repair and overhaul shops requiring corrosion-inhibiting properties. Available in all three classes, PPG’s PRC PR-2870 sealant hits customer’s key requirements for fuselage and pressure sealants, such as rapid cure and light weight characteristics.

PR-2870 sealant for roller application (Class C) is now available with 48-hour application and assembly time for large, complex aircraft structures. Like the other Class C grades, the company says, it cures 70-percent faster than traditional interfay sealants at ambient conditions, minimizing cycle time.

The chrome-free sealant will soon be available for spray application that will enable coverage of wide areas for self-leveling fairing over countersunk fasteners and as a flexible primer under paint in areas such as wheels to protect against stone chip impact.

PPG has qualified PR-2870 sealant in viscosities for application by brush (Class A), extrusion (Class B) and roller (Class C), with half-hour and two-hour work times for Classes A and B and 12-hour and 24-hour options as well as a new 48-hour option for Class C. In addition to complying with EU REACH regulations, PR-2870 sealant is also qualified to U.S. Military Specification MIL-PRF-81733. It is supplied in a two-part SEMKIT package or premixed and frozen cartridge.

A replacement option for Pro-Seal 870 sealant, PR-2870 sealant is designed to inhibit corrosion on metal in aerodynamic smoothing, structural surface sealing, fay sealing and pressure fuselage sealing aircraft applications.

For more information, visit ppgaerospace.com.

Editor Pick

Automated Selective Plating Takes Off With Safran Project

Sifco ASC has partnered with Safran on various surface finishing projects for more than 20 years, including recent work to increase wear resistance on an aircraft’s axles.