Recycle Guard A/C System Sealant Remover removes sealant, dye, lubricant, and other contaminants from refrigerant prior to entering the recovery unit. Protect your investment with this inexpensive easy to use filtration solution. The A/C System Sealant Remover is used with virtually any recover, recycle, and recharge units that have external or internal manifold pressure gauges (Your unit must have 1/2" ACME Fittings for proper hose connection).