Aircraft engines - MTU Power

Brush seals: Aircraft Engines

Standard in next-generation aircraft engines

MTU brush seals find homes mainly in aircraft engines. They have indeed proved their worth in operation, having accumulated well over 7.5 million running cycles in advanced aircraft engines as:

shaft seals
static seal members
bearing chambers or rotor wheel seals

Our long-standing experience enables us to provide custom-tailored solutions for all aircraft engine applications and for almost every area of the engine.

MTU’s innovative seals have also found a home in Pratt & Whitney’s next-generation geared turbofan engines. All PurePower PW1000G family engines come equipped with brush seals made by MTU. The PW110G-JM engine to power the Airbus A320neo alone will incorporate MTU’s seals at four locations. Compared with labyrinth seals, MTU’s brush seals have halved cooling air losses at all installation positions in the engine, which results in:

enhanced efficiency
reduced fuel burn
reduced CO2 emissions
more compact design

MTU brush seals as semi-static seals
One innovation developed by the MTU experts is the semi-static brush seal. In this field of application, MTU brush seals are used to seal off non-rotating parts of a machine in operation by compensating movements of several millimeters and high differential pressures in a mostly hot environment of up to 700 degrees Celsius.

MTU brush seals are used on the following engines:

GTF engine

Powering the Airbus A320neo family, Airbus A220 and the Embraer E-Jets

PW6000

The main features of the PW6000 are its high efficiency and simple design. Intended for use on short-haul routes, the engine powers the Airbus A318.

RB199

In collaboration with Rolls-Royce and Avio Aero, MTU began developing and producing the RB199 in 1969 to power the Panavia Tornado multirole fighter jet. During the 1970s and 1980s, the Panavia Tornado was Europe’s largest and most successful military aircraft program.