Hw90 Reseal (2025)

Before you start, ensure you have a clean workspace and the following items:

Restoring the Punch: A Step-by-Step Guide to Resealing Your Weihrauch HW90 Weihrauch HW90

: Many enthusiasts recommend upgrading from the factory seal to an aftermarket option like an , , or for better performance. HW90 Reseal

If you’ve noticed a drop in power, a "slammy" shot cycle, or if air escapes when you remove the rear port screw, it's time for a reseal. Here is a comprehensive guide to getting your HW90 back in peak condition. Essential Gear for the Job

) and a to repressurize the system afterward. Step 1: Depressurize and Disassemble Before you start, ensure you have a clean

is a powerhouse in the air rifle world, famous for its unique . Unlike a standard spring-piston rifle, the HW90 uses pressurized air as its powerplant. While this makes for a smoother, more adjustable shot cycle, it also means that once those internal seals fail, your rifle becomes a very heavy paperweight.

: Use Krytox or high-quality Moly grease . Avoid synthetic engine oils that can cause O-rings to swell. Specialty Tools : You will need a Gas Ram Charging Pump (like the Essential Gear for the Job ) and a

Never attempt to disassemble a pressurized gas ram.