High temperature silicone damper / dampener rings great for remedying microphonic oscillations and tube rattle. These red dampening rings are rated for temperatures up to 240°C and come in various sizes to fit a variety of tubes. Please verify your tube sizes to ensure a proper fit.

• 20mm: Recommended size for 12A_7 (i.e. 12AX7, 12AT7, 12AU7, etc.) types, EL84, or any other tube with a ~20mm diameter.