ERMES rubber cap for sealing aluminum or carbon speargun barrels. The cap is suitable for barrels with an internal diameter between 25.5 and 26.5 mm.
NB THE PRICE REFERS TO THE SINGLE PIECE.
Assembly instructions: Lightly grease with silicone sealant. Push the cap in the center, using, for example, one handle of a pair of pliers. The sealant will help slide the cap into the barrel to the desired position. Let it dry for a few hours and then reassemble the remaining parts.