If you’ve been shopping for sound deadening materials, you’ve probably seen terms like 80 mil, 190 mil, or 225 mil. But what does mil actually mean?

Cutting VibraFlex isn’t like cutting traditional materials. It’s not butyl—it’s a dense bitumen-based deadener, designed for serious sound control. At Pure Pressure, we’ve dialed in the process to get clean, safe cuts without mess or frustration.

Pure Pressure VibraFlex 190 and 225 are premium self-adhesive sound deadening panels made from a flexible, high-density bitumen compound. Designed to dramatically reduce both structure-borne vibration and airborne noise, these sheets are ideal for automotive floors, wheel wells, speaker enclosures, industrial machinery housings, and marine engine rooms.

Confused about whether to put butyl or VibraFlex down first? You’re not alone. Choosing the right stack-up doesn’t just impact performance—it affects how long your install holds up. In this post, we’ll break down the best practice for combining VibraFlex, butyl CLD mats, and foam layers so you get maximum performance without wasting time or money.

When people hear “sound deadener,” they often think of competition audio builds and high-SPL vehicles. But VibraFlex isn’t just for the competition lane—it’s a practical, performance-focused product that makes a huge impact in everyday builds, from daily drivers to full-on van conversions.

If you’re serious about SPL (Sound Pressure Level) builds, then you already know: every decibel counts. While traditional butyl-based deadeners have been the go-to for years, they’re no longer the gold standard. VibraFlex is now the top choice for competitors who want to win.