If the spring cannot be have it's kink removed (occasionally, then can be with pin nose pliers) I may have a spare you can have.
The springs vary dependent on manufacturer (Rolf is common) but I do have various. Call me mean

but I keep old seals just for the reason you have experienced!
What is the
make (& size, just as a check) of the seal, & preferably the cross section diameter of the spring (probably less than Ø3 mm), please?