whirlpool duet not spinning clothes dry

whirlpool duet model # GHW9300PW4
Clothes and towels taking over 1 hour in new dryer to dry - washer doest seem to be spinning clothes dry.
Also need new rubber seal in front - it is black - have tried everything to clean it
Is it worth repairing this and what are the parts
Thanks :frowning:

When you watch the washer in spin mode, does it spin at high speed?
When you say you need a new rubber seal in front, is that because it is leaking?