Elastic 50A Resin V2 is a soft, translucent elastomer with a 50A Shore durometer that is ideal for prototyping parts normally produced with softer rubbers and silicones. Parts printed in Elastic 50A Resin will bend, stretch, compress, and hold up to repeated cycles without tearing, and spring back quickly to their original shape.
 
Download:
Technical Datasheet
 
Please always refer to Formlabs link below for resin compatibility and life times:
https://support.formlabs.com/s/article/Choosing-the-Right-Material?language=en_US