Dürr Universal - Absorptive Silencers

Absorptive silencers are very effective on high noise frequencies (500-8,000 Hz). At frequencies above or below this range, attenuation performance progressively diminishes. Since noise is absorbed by the packing material, absorptive silencers do not rely on internal baffles, tubes or other restrictive devices to achieve noise reduction. Consequently, absorptive silencers generally employ a “straight-through” or similar internal designs that cause minimal air flow restriction.