SEAL PUTTY NF-12HM Non-Hardening Industrial Duct & Cable Sealing Putty (Grey)

SEAL PUTTY NF-12HM Non-Hardening Synthetic Industrial Sealing Putty engineered with high adhesion, dielectric insulation, and permanent plasticity for sealing electrical cabinet cable penetrations, HVAC copper pipe wall holes, and telecom conduits against rodents, moisture, dust, and insects.