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View larger EPeS WE G-Series Gen2 GBB Magazine Seal Set in black is a replacement O-ring kit designed to repair leaking WE Gen2 gas magazines. The seals are made from high-quality NBR rubber with a hardness of 70 ShA, helping restore magazine airtightness, consistent performance, and reliable gas retention. The package contains enough seals for 5 magazines.

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The EPeS seal set for WE G-Series Gen2 magazines offers a simple and cost-effective solution for repairing magazines that have started leaking or lost their original seal. The kit includes O-rings measuring 18 × 1 mm, matching the newer generation of WE Gen2 magazines. They are manufactured from high-quality NBR rubber with a hardness of 70 ShA, providing long service life, good resistance to common airsoft gases, and reliable sealing between magazine body sections. One package contains enough seals to service 5 magazines, making it suitable not only for individual users but also for teams with multiple magazines. These seals are not compatible with older WE G-Series Gen1 magazines, which use 18 × 2 mm O-rings.
Helps eliminate gas leaks between magazine body sections.
70 ShA rubber provides long service life and reliable sealing performance.
The package contains enough O-rings to service five magazines.
Designed specifically for WE G-Series Gen2 magazines using 18 × 1 mm seals.
An ideal maintenance part for regular servicing of gas magazines.
A Gen1 magazine can be identified by its completely flat rubber gasket on top and two metal pins on the sides securing the base. The newer Gen2 version features a curved top gasket that provides a much better seal with the pistol nozzle. After sliding off the baseplate, Gen2 magazines also use a single large center screw instead of side pins.
In most cases, yes. Worn or damaged seals are the most common cause of gas leaks between magazine components.
Yes. We recommend applying a small amount of silicone oil during installation. This improves sealing performance and extends seal lifespan.
| Variants | WE G-Series Gen2 |
| Color | Black |