TCT Weatherseal Recessing & Seals The perfect weatherstrip cutter, ideal for use with a portable router on site. DESCRIPTION TTWSC2 is used without a bearing. TTWSC3 has a 90mm overall length to suit 40-50mm rebate on doors. TTWSC4 routs a 2.7mm groove, 6mm deep. TTWSC5 suits the slot seal Carripile I weatherstrip system. TTSSC1 is a Smoke Seal cutter, designed to run off the bearing and give correct depth of cut to take a Quick Fit Smoke Seal Strip.