Why would I need to replace the O-rings in my engine? PolarStar Fusion Engine O-Ring Set | Oring Repair Kit

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Why would I need to replace the O-rings in my engine? PolarStar Fusion Engine O-Ring Set | Oring Repair Kit

Status: Open Jan 09, 2026 - 07:50 AM

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Jan 09, 2026 - 07:50 AM

O-rings wear out over time due to friction and air pressure, leading to leaks and reduced performance. Replacing them with the correct sizes from this o-ring repair kit restores your engine's efficiency and reliability, which is essential for competitive airsoft play and long-term durability.

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Why would I need to replace the O-rings in my engine?

PolarStar Fusion Engine O-Ring Set | Oring Repair Kit

These are the replacement O-Rings for the Polarstar Fusion Engine. This set contains all the O-Rings that are needed to replace worn O-Rings on your Fusion Engine/PR-15.This kit contains the following O-Rings:1x Nozzle Outer1x Nozzle Inner4x Manifold1x Poppet Base1x Poppet Retainer1x Front Cylinder1... See More

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PolarStar Fusion Engine O-Ring Set | Oring Repair Kit

These are the replacement O-Rings for the Polarstar Fusion Engine. This set contains all the O-Rings that are needed to replace worn O-Rings on your Fusion Engine/PR-15.This kit contains the following O-Rings:1x Nozzle Outer1x Nozzle Inner4x Manifold1x Poppet Base1x Poppet Retainer1x Front Cylinder1... See More

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Why would I need to replace the O-rings in my engine? PolarStar Fusion Engine O-Ring Set | Oring Repair Kit

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