Full o ring seal kit for the Gehmann 4 stage M100 Turbo air rifle pump.
Includes all o rings required to refurbish or re-seal your airgun pump.
Pack includes sizing chart to match seals up to the exploded diagram on our website.

Not sure if you have a 3 stage or 4 stage Gehmann pump? The easiest way to find out is to look at the top of your pump.
Only the 4 stage pump has the brass knob on the handle: