PN#8-20D  SKU#20338  The “Original” Morris compression coupling designed to join pipe and tubing for pneumatic conveying systems. Easy to install. Pipe and tube sizes 1/2″ through 48″. Standard construction is heavy gauge zinc-plated steel. Also available in stainless steel and aluminum. Gasket materials: black and white neoprene, silicone and others. Static conductive grounding strip is standard. 2 Bolt. Size: 5-1/4″ – 8-5/8″ OD. Thickness: Shell: .062. Sleeve: .052. Gasket: .125.