PPG Aerospace seal caps’ applications growing in commercial, military aviation

New sizes developed to fill growing demand for molded caps to seal fasteners

PARIS, June 18, 2007 – From the Eurofighter to the Boeing 787, applications are growing in commercial and military aviation for sealant caps made by PPG Aerospace – PRC-DeSoto that afford time and labor savings and quality advantages for sealing fasteners, according to company officials.

Since their introduction in 2003, PRC seal caps by PPG have shown excellent adhesion with no sealant voids, and they are now being used for lightning-strike protection, according to John Sands, global business platform manager for aerospace sealants.

PRC seal caps are small caps molded from liquid PRC sealant that cures to form a flexible rubber shell. The cured caps are filled with more sealant, then frozen to arrest curing. The seal caps are thawed and applied over fasteners to cure, affording higher quality, less waste and better uniformity than traditional extruded application, according to Sands.

“Seal caps are becoming the sealant application method of choice in applications where consistent size, weight and quality are essential. In addition, the use of seal caps in hard-to-reach applications can minimize applicator strain, which also leads to improved quality,” Sands said. “We now have more than 40 sizes to meet customer needs.”

In addition to their use by Boeing on the 787 Dreamliner and Eurofighter consortium for the Eurofighter Typhoon, PRC seal caps are used by Cessna Aircraft Co., Hawker Beechcraft Corp. and Eclipse Aviation as well as by Lockheed Martin on the F-16 and C-17, Sands said.

With the success of PRC seal caps on the C-17, the U.S. Air Force is considering their use on other programs, including the B-52, Sands said.

Paris Air Show visitors have the opportunity to see PRC seal caps made by PPG Aerospace – PRC-DeSoto at the PPG Aerospace exhibit at Hall 2B, Stand H6. The Paris Air Show is June 18-24 at Le Bourget Airport.

PPG Aerospace is the aerospace products and services business of PPG Industries. PPG Aerospace – PRC-DeSoto is the leading global producer and distributor of aerospace coatings, sealants, and packaging and application systems. PPG Aerospace – Transparencies is the world’s largest supplier of aircraft windshields, windows and canopies.

About PPG
Pittsburgh-based PPG is a global supplier of paints, coatings, chemicals, optical products, specialty materials, glass and fiber glass. The company employs more than 30,000 people and has 125 manufacturing facilities and equity affiliates in more than 20 countries. Sales in 2006 were $11 billion. PPG shares are traded on the New York and Philadelphia stock exchanges (symbol: PPG). For more information, visit www.ppg.com.

PRC is a trademark of PRC-DeSoto International, Inc.

Dreamliner is a trademark of The Boeing Company.


Audrey Fujimoto
PPG Aerospace