T-158LL Track Block Mold Set

Sources Sought

1. General. This purchase description defines the requirements for the design, fabrication, and delivery of two (2) each T-158LL four (4) cavity track block injection molds and one (1) each cold runner for use by RRAD Rubber Products Branch.

1. Technical Specifications. The mold set and cold runner shall be designed to operate with a Desma model D 968.400 ZO 400 ton double shuttle injection press at RRAD Rubber Products Branch building 493. The Government has included drawings 12387878 Revision B and 12387877 Revision C to use as a design guide. The completed molds shall produce rubberized track blocks in accordance with the dimensional and technical specifications identified on the drawings. The minimum requirements and quantities for the molds and cold runner are as follows:

1. 1. Molds.

1. 1. 1. Two (2) each complete four (4) cavity injection molds designed to produce rubberized track blocks that comply with the dimensional and technical requirements of drawings 12387878 Revision B and 12387877 Revision C.
      2. Molds shall be designed to operate with a Desma model D 968.400 ZO 400 ton double shuttle injection press currently in use by RRAD.
      3. Mold dimensions: 670mm x 780mm
      4. Mold plate material shall be 4140 alloy steel.
      5. Upper cavity inserted with a through hardened insert
      6. Shall contain heaters in the lower cavity plates
      7. Edges shall have backer inserts to minimize flash
      8. Shall contain vacuum in the tool
      9. Molds shall allow the use of a changeable commercially available date code insert for the application of date information (Plastixs, DME, or similar). The date insert shall be placed in an area as secure as possible from field inflicted damage.
      10. The contractor shall assign a unique number to each mold cavity. Molds shall be engraved or milled to allow imprinting of the following information on the rubber in accordance with drawing specifications:

19207ASSY12387878

MFR-67101

COMPOUND 0158

Mold/Cavity Number

1. 1. 1. Shall be designed to interface and operate with the included cold runner below:

1. 1. Four (4) Nozzle Cold Runner - One (1) Each.
      1. Shall be designed to operate with a Desma model D 968.400 ZO 400 ton double shuttle injection press currently in use by RRAD.
      2. Solid block construction of rubber distribution plate
      3. Passages through the blocks shall be gun drilled for precision
      4. All rubber passage transitions shall be made with hardened steel diverters
      5. Nozzle towers shall be 420 stainless steel for longevity
      6. Nozzle tips shall be flat tip, spring loaded design
      7. Tips shall be serviceable from the cold runner manifold parting line.

No award will be made as a result of this sources sought. No reimbursement will be made for any 
costs associated with providing information in response to this sources sought or any follow up 
information requests. This sources sought is only to seek information from industry. Please submit 
letter of interest to include:
1. Any certifications
2. Any past government awards
3. Business size and status.
Submit these documents to Robert L. Lamb at robert.l.lamb10.civ@army.mil with the subject title 
"T-158 Track Block Mold Set Sources Sought." Suspense for this action is 3:00 PM CST, 25 September 2024.