→ Fix leaky magazines
→ High viscosity

4UANTUM Airtight Sealant is made specifically to fix and repair leaking o-rings and rubber gaskets on gas magazines. Silicone rich formula keeps rubber parts soft and extends service life.

Can also be used to improve sealing of pistons and other airtight components.

Packaged in an easy-to-use pen container. Enough to fix several leaky mags.