I am close to buy an original Diana model 35 and (maybe) an original model 50.

These rifles most probably will need new piston seals. There is a website in Germany that has many replacement parts (I do not know if I am allowed to write their address/link here...I am sure many of you know who they are).

They have the original seals, three parts, all (I believe) made of leather. They also have an elastomer piston seal, only one piece that replaces the three leather parts.

Should I buy the "modern" elastomer seal? Better than the originals -why?

Thanks
Ignacio