PPG Industries’ aerospace business has introduced its lightest fuel tank sealant, which is designed to add less weight to aircraft for enhanced fuel efficiency while affording rapid curing to meet the needs of today’s higher aircraft build rates.
PR-2007 polysulfide sealant, which is made by PPG Aerospace and PRC-DeSoto, is the first product to meet SAE International’s aerospace material specification (AMS) 3281 type II for low-density, fuel-resistant polysulfide sealing compound and the lightest AMS-qualified aircraft sealant.
Bill Keller, PPG Aerospace’s global segment manager for aerospace sealants, said: “Using proprietary technology, we are taking sealant weight reduction to a new level. With the thousands of fuel tank fasteners on an aircraft, sealant application can represent considerable weight.
“Our previous-generation product, PR-1776, affords a 20% weight saving over traditional sealants. PR-2007 provides a further 10% weight saving on top of that. Specific gravity of cured PR-2007 sealant is just 1.1, slightly above the density of water, compared with 1.29 for PR-1776.”
PR-2007 sealant also cures in about half the time of PR-1776 sealant.