Yes, PRESSINGS is a Scrabble word!

Letter values in Scrabble US: P 3, R 1, E 1, S 1, S 1, I 1, N 1, G 2, S 1.

Is it a valid word?

PRESSINGS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

exert pressure or force to or upon
force or impel in an indicated direction
to be oppressive or burdensome
place between two surfaces and apply weight or pressure
squeeze or press together
crowd closely
create by pressing
be urgent
exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for
press from a plastic
make strenuous pushing movements during birth to expel the baby
press and smooth with a heated iron
lift weights
ask for or request earnestly

Also: urge on, press out, iron out, weight-lift.

Not playable in Scrabble US: WEIGHTLIFT.