No-hub couplings are used to join no-hub cast iron soil pipe and fittings. Made in accordance with Cast Iron Soil Pipe Institute Standard (CISPI) #310. Couplings are shipped as assemble units. Stainless steel corrugated shield and clamp are assembled over a molded one piece neoprene sealing sleeve. Band and shield are ASI301 stainless steel and screw is ASI305 stainless steel. No-hub gasket sleeves conform to ASTM Standards C564.