Clutch pipe seals

Looks like the clutch master cylinder has gone on our 55 Octavia Estate Mk2 Ambiente 2.0 FSI, pedal to the floor, and signs of leaking in the engine bay

Any clever substitutions for the tool to get the actuator clip off the clutch pedal?

Otherwise I'll tape a couple of small bolts to a big pliers thing I've got...

Also, found plenty of master cylinders online, but can't see the replacement seals/o rings anywhere?

Thanks!