The U.S. market for gaskets and seals is expected to expand 2.7 percent per year (including price increases) to $8.8 billion through 2012, roughly in line with sales performance during the 2002-2007 period, according to a study by the Freedonia Group (www.freedoniagroup.com). The study, titled Gaskets & Seals, says suppliers will benefit from a rebound in motor vehicle production, as well as from solid increases in machinery production and capital spending. Rising demand for more expensive sealing products made from advanced materials is also expected to support gasket and seal demand growth. Freedonia acknowledges, however, that increased use of better performing products will have a mixed effect over time, as initial value gains will be offset by longer useful lives, decreasing aftermarket sales.