Report Dust Collector Filter Bag leak in Power Tools Posted October 28, 2015 I walked over to the corner with the cyclone, and sure enough I had a little puff of dust exiting a part of the plastic bag/band clamp connection. The bag is a wider diameter than the pleated filter, so I always end up with a fold or pleat in the plastic bag where the band clamp rests. I noticed this on the old single stage collector I had too. I never had an airtight seal at a point where it is critical to have an airtight seal. Is there a trick to reduce leaks at this point? It is such a stupid design.Get some weatherstripping tape and attach it around the metal sleeve that the bag slides over. When you install the bag and cinch down the band clamp, the compression of the bag over the foam rubber of the weatherstripping tape will create a tight seal, even if you have pleats.