The external air cylinder helps prevent gasoline or other products from contaminating the air supply. The air cylinder is hard-coated aluminum with a polished stainless steel shaft. Cylinders have 1/8" NPT port for air connection and are supplied with a fusible plug installed.
        
                    Unit of Measure
                    
               
        
            
                                                                                Package Type | 
                                                                        N/A Each | 
                                                                                Units Per Package | 
                                                                        N/A 1 | 
                                                                                Seal Material | 
                                                                        N/A Buna | 
                                                                                Manufacturer | 
                                                                        N/A Betts | 
                                                                                Vendor Item # | 
                                                                        N/A AC35005ALB | 
                                                                                Weight | 
                                                                        N/A 2.3 lb |