The Sporlan K-SA-4 See-All Replacement Indicator Paper Kit (780002) is designed for servicing compatible Sporlan See-All moisture and liquid indicating sight glasses used in refrigeration and air conditioning systems. This replacement indicator assembly restores the visual moisture indication function within the sight glass to support system monitoring and maintenance. The K-SA-4 indicator paper kit is suitable for use with a range of common refrigerants, including R-134a, R-22, R-404A, R-407C, R-407F, R-410A, R-507, R-1234yf, and R-1234ze. It is intended for replacement applications where the original indicator element requires servicing due to age or exposure. Designed for HVAC and refrigeration maintenance professionals, this kit helps maintain accurate visual indication of refrigerant moisture conditions when installed in compatible See-All assemblies. Always confirm model compatibility prior to installation.