The standard materials for theXA series are nickel-plated brassand 303 and 316 stainless steels.Other metals and plastics can besupplied on request. See pages31 and 32 for a completematerial list.Air CylindersThe air cylinders used for XAhardware assemblies E and Fhave rods and cylinders made ofstainless steel and end caps madeof anodized aluminum. All metalparts in contact with the sprayliquid are 316 stainless steel.SealsThe standard material for XAgaskets is compressed fiber with aneoprene binder. For installationsrequiring FDA approval, SBRgaskets are available. Otherelastomeric and metallic gasketmaterials can be suppliedon request.The standard material forO-rings in XA automatics isViton®. Other materials availableon request.