The main shaft in a commercial aircraft engine had an existing carbon face seal experiencing high leakage and seal failures.
High speed (51,000 rpm)
Gearbox oil (MIL-R-23699)
Determining Cause and Failure Modes
Technetics Qualiseal Technology FEA model indicated significant face tapering and waviness in the two-piece seal nose design
The existing design also enabled anti-rotation wear, causing the part to hang up and further contribute to the significant leakage
Technetics Qualiseal Technology Solution
Designed a new carbon face seal with a mono-block seal nose design
Integral anti-rotation heat treated to high hardness for wear resistance
Final design solution required NO COST INCREASE over the original product
A Legacy of Excellence
Today, with 13 primary manufacturing locations and more than 1,000 employees globally, the Technetics Group has grown to be the leading manufacturer and designer of sealing and critical component solutions, including sub-systems and assemblies, in the world.