PMA engineers and produces custom preforms for customer specific applications. PMA preforms reduce waste of alloy, cost of labor and rework by increasing mass production quantities. Preforms are easy to handle and offer considerable advantages where controlled thickness of brazing joint and uniform coverage are required.

PMA designs and manufactures custom-made brazing preform rings made of nickel-based alloys. PMA uses customers’ required alloy mix, size and shape specifications then produces preforms with 99.99% quality repeatability.

With PMA preforms:

• 100% yield acceptance rate – first pass, first try
• Custom engineered dimensions within 0.0004”
• 99% quality repeatability
• Ideal for precision-detailed work and mass production
• No fillers or binders needed

Advantages for customers using PMA preforms: 

• Reduction of time and material applying alloys
• Cleaner than using brazing paste
• Easy budgeting of materials for lean manufacturing
• No Rework
• Shelf stable
• Wetting of alloys is uniform and smooth at joint

Brazing preforms can be designed to fit into many different physical configurations to meet specific applications. They come in many shapes and sizes, such as washers, rings, balls, discs, shims, formed wires, arc rings and irregular shapes. The size of the preform is determined by the area it is being used to join and the material desired.

All preforms are custom engineered and manufactured. Please call PMA at 800.845.7259 or 909.483.3222 to discuss preform options, or contact us at sales@rankin.com.