EXHIBIT 10.4

MEMORANDUM OF UNDERSTANDING

United Technologies/Pratt & Whitney located at 400 Main
Street, East Hartford, Connecticut (hereinafter referred to as PWA) and Kreisler Industrial Corporation using the business address of 180 Van Riper Avenue, Elmwood Park, New Jersey (hereinafter referred to as Kreisler), and collectively referred to
as Parties, do hereby agree to the following Memorandum of Understanding (MOU):

PWA agrees to provide and Kreisler agrees to
accept $2,000,000 of funding, subject to internal PWA approvals, to cover start-up costs associated with Kreislers development of a tube assembly facility in Poland. Payments totaling $2,000,000 will be funded as follows:



|                                              |  |   |  |           
|--------------------------------------------- |  | - |  | ----------
|$552,000 F119 Program Cost Reduction (PCR)    |  | } |  | $1.5m 2007
|$448,000 F119 2007 Discretionary              |  |  
|$500,000 Global Operations Strategy (GOS) CAR |  |  
|$500,000 F119 2008 Discretionary              |  |  

Kreisler agrees to submit invoices to PWA for costs incurred while providing mutually agreed upon
backup to support the PCR funding invoiced charges. Both parties shall mutually agree to the timing of the funding.

The Parties agree that
the unit prices for the purchase and sale of the parts are set forth on Attachment A. The Prices will apply to all parts set forth in Attachment A that are delivered from Kreisler to PWA on or after January 1, 2008 and on or before
December 31, 2010, and will supercede any other prices previously agreed to by the Parties. The Parties agree that the Raw Material, Casting, Forging and Proprietary fittings portion of the unit prices for the purchase and sale of the parts
that are set forth-on Attachment A may be subject to inflationary/deflationary adjustments to be defined prior to December 21, 2007

The funding agreement and pricing structure provided for this MOU anticipates 138 F119 engine requirements for 2008-2010. Based on 138 engines, it is the expectation of the Parties that PWA will receive a cost reduction benefit of
$1,000,000 more than the $2,000,000 of proposed funding advancements to Kreisler through the reduced pricing structure provided for herein if the volume of F119 parts purchased by PWA from Kreisler remains consistent with the 138 F119 engine
forecast. Should the 2008-2010 volume of the F119 parts purchased by PWA from Kreisler be materially reduced due to Kreislers inability to perform, due to but not limited to, financial problems and/or quality control issues with the parts, it
is the Parties intention and understanding that PWA shall be entitled to offset amounts on existing invoices with Kreisler against the remaining uncovered amount of PWAs funding advancement of $2,000,000 plus the cost reduction benefit of
$1,000,000 for a combined total of $3,000,000.

This is a memorandum of understanding that anticipates the execution by the Parties of an
LTA agreement covering all of the terms hereof for those terms to be given effect. PWA and Kreisler each agree to negotiate in good faith the Terms and Conditions associated with this MOU in order to execute a completed LTA agreement prior to
December 31, 2007. The provisions of this MOU will be binding and effective on the Parties in the event an LTA is not concluded by the Parties.



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IN WITNESS WHEREOF, the parties hereto have by their duly authorized representatives executed this
agreement on the date written below.



|                                |  |                      |  |                                  |  |                          |  |                        
|------------------------------- |  | -------------------- |  | -------------------------------- |  | ------------------------ |  | -----------------------
|KREISLER INDUSTRIAL CORPORATION |  |                      |  | UNITED TECHNOLOGIES CORPORATION,
|                                |  |                      |  |                                  |  | PRATT & WHITNEY DIVISION
|                                |  |                      |  |                                 
|By:                             |  | /s/ Michael D. Stern |  |                                  |  | By:                      |  | /s/ Dan Richardson     
|Name:                           |  | Michael D. Stern     |  |                                  |  | Name:                    |  | Dan Richardson         
|Title:                          |  | Co-President & CEO   |  |                                  |  | Title:                   |  | Commodity Manager      
|Date:                           |  | April 20, 2007       |  |                                  |  | Date:                    |  | March 14, 2007         
|                                |  |                      |  |                                 
|                                |  |                      |  |                                  |  | By:                      |  | /s/ John Cantillon     
|                                |  |                      |  |                                  |  | Name:                    |  | John Cantillon         
|                                |  |                      |  |                                  |  | Title:                   |  | Controller Procurement 
|                                |  |                      |  |                                  |  | Date:                    |  | March 15, 2007         
|                                |  |                      |  |                                 
|                                |  |                      |  |                                  |  | By:                      |  | /s/ Kevin Gaffney      
|                                |  |                      |  |                                  |  | Name:                    |  | Kevin Gaffney          
|                                |  |                      |  |                                  |  | Title:                   |  | General Manager - CANMC
|                                |  |                      |  |                                  |  | Date:                    |  | March 15, 2007