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Maintain your HPA system’s top performance with the PolarStar Complete O-Ring and Screw Set for Jack, a genuine replacement kit engineered for the PolarStar Jack HPA Engine.
Complete o-ring set for all versions of the JACK with the exception of the MP7 variant. Plug screw included.
1x M1.5 x 6.5 (Buna 70) – Front Outside of Nozzle2x M1.5 x 9.5 (Buna 70) – Rear Outside of Nozzle1x M1.5 x 19.5 (Buna 70) – Thread Relief of Front Cylinder1x M1.0 x 18.5 (Buna 70) – Captured Between Front Cylinder and Donut3x M1.0 x 5.0 (Buna 70) – Two on Nozzle Stem & One Inside of Nozzle1x M1.0 x 2.5 (Buna 70) – Plug screw on bottom1x M1.0 x 4.5 (Buna 70) – Barb Fitting
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