Bolted Couplings are either galvanized or stainless steel shells which are easy to install. Precision cut inner sleeves and gaskets, available in white, silicone and Viton. The thick stiffener bars provide added strength and thick 1/8″ black neoprene gaskets are standard. Stainless anti-static strips included. Threaded bolts won’t strip or break and replacement gaskets are available. Gasket protectors are available upon request.