NSPA OptiSeal - Sealed Electrical Connectors
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2021/10/28
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OptiSeal SES (Sealed Electrical System) premier electrical connectors made by NSPA. All Opti-Seal connectors offer transparent Crystal Clear tubing for easy visual inspection before and after installation. Butt Connectors are used to connect one wire to another, Ring Terminals are used to connect a wire to a connection point, and Step-Down connectors are used for correctly connecting different gauge wires together. Terminal Stud Size Chart PDF here: