VORTEK - Air Arms Moly-Core Piston Seal

I recently replaced the OEM (Original Equipment Manufacturer) piston seal in my TX200 MKIII with the Vortek Moly-Core seal. Unlike the OEM seal, the Vortek seal was expertly machined with no burrs or seams. I installed the seal without lubricant and it out performed the OEM seal. I'll let the numbers speak for themselves.

High 825 fps
Low 820 fps 
Extreme Spread 5 fps
Standard Deviation 1.5 fps

High Energy 19.1
Low Energy 18.9
Energy Range .2

I used the .22, H&N Baracuda Green 12.65 grain pellets.
Head Diameter 5.49mm - 5.51mm
Skirt Diameter 5.70mm
Pellet Length 8.23mm - 8.26mm