Super Seal Advanced , now with DRY R to eliminate moisture, is a faster and compressor-friendly method of permanently sealing and preventing leaks in A/C and refrigeration systems. DRY R boosts sealant performance, increases drier efficiency, while preventing waxing and acid formation. Super Seal Advanced is engineered to HVACR industry standards and is easily installed into a fully-charged system, with NO pump down or recovery. Recommended for systems that are not losing more than 15% of the entire charge over a four-week period.