The Ballistol Suppressor Cleaner Rubber Cork 3 Piece Set are to be used with the Ballistol Suppressor Cleaner to help dissolve and neutralize combustion residues in your suppressor. ApplicationClose suppressor on one side with rubber corks and fill completely. Leave the cleaner in the suppressor for at least 2 hours. All combustion residues will be dissolved automatically. In the case of suppressors with particularly high firing loads, heat the cleaner to approx. 104 degrees fahrenheit and extend the exposure time to at least 4 hours. Then remove the cleaner. To dissolve remaining dirt, fill half of the damper with clear water. Close the second opening and shake vigorously. If necessary, repeat this rinsing process until the water no longer contains soot particles. If the suppressor cannot be closed (due to its design), it can be completely immersed in the cleaner. Also suitable for dismountable silencers. Insert dirty parts and clean with a brush and water after the reaction time.