Recent content by PTMX

Maybe they have always bulged inwards and we are now more aware since the training to introduce PCC-1. Alternately could it be the change to graphite filler makes radial movement more likey with the lower coeff of friction?

We only use inner rings for the 1500# flanges, the ones in question are 150# and 300#

We have recently adopted PCC-1 torque figures for bolting B16.5 flanges. Feedback from the technicians is that the gaskets are now being found with the spiral windings crushed into the pipe bore and the outer rings are tending to cup. We use Flexitallic spiral wound gaskets with 'flexicarb'...