• 150g bag
• Recommended filling density; 130g/dm²
• Each silencer requires stainless wire wool to wrap around the perforated tubing AND E-Glass wool to act as sound damping. See below in conjunction with the wool data table:

For calculation of wool required to fill a silencer use the following process:

1. Calculate the casing end plate area (a) in dm².
2. Calculate the area of the perforated tubing (b) in dm².
3. Subtract (b) from (a) which equals the usable face area of the silencer (c) in dm².
4. Multiply (c) by the length of the silencer (L) which is the volume of the silencer (v).
5. Multiply the volume (v) by the number of recommended grams per dm2 (130).
6. This weight (w) in grams is then divided by 150 to identify how many bags of E-Glass wool are required.

Example:

Casing = 140/220mm

L = 350mm

Perforated tube = 63.5mm

Recommended wool density = 130g/dm²

Wool in g = (((Casing area – Tubing area) x L) x 130) / 150

(((2.334-0.317) x 3.5) x 130) / 150

Answer = 918g or 6 bags