FF0320 Steel Par Flange ORFS Sleeve Check Part Number TUBE OD L36 d8 Parker # FF0320-06 3/8 0.34 0.62 6 TPL-S FF0320-10 5/8 0.42 0.92 10 TPL-S FF0320-12 3/4 0.48 1.09 12 TPL-S FF0320-16 1 0.53 1.34 16 TPL-S FF0320-24 1 1/2 0.49 1.91 24 TPL-S