Multi-Seals offers a free engineering sample kit of Uni-form epoxy preforms. Includes a variety of epoxy preform configurations along with an information pack.  Free evaluation samples in specified dimensions and epoxy systems are also available for specific applications. The preforms are an alternative to liquid epoxy for high-volume epoxy sealing applications. 
 
Preforms are one-part epoxy resins that are solid at room temperature. When heated, they melt and cure, forming a consistent seal that protects components from dust, moisture, oil, flux, solvents, conformal coatings and other contaminants.  Close tolerances on preform configurations, consistent pre-mixed ratios of resin to catalyst and consistent viscosity from beginning to end of batch ensure uniform results. 
 
Can be dispensed at 200 to 600 parts/min. with little or no operator training.  Said to eliminate pot-life concerns and cleanup procedures. 

Multi-Seals Inc., multi-seals.com