PAI Homogeneous Rubber V-Rings are made to the dimensions of Military Drawing AN 6225
        
                    Unit of Measure
                    
               
        
            
                                                                                O.D. (Inches) | 
                                                                        N/A 4.375 | 
                                                                                I.D. (inches) | 
                                                                        N/A 3.625 | 
                                                                                C/S (inches) | 
                                                                        N/A 0.375 | 
                                                                                Nominal O.D. (inches) | 
                                                                        N/A 4 3/8 | 
                                                                                Nominal I.D. (inches) | 
                                                                        N/A 3 5/8 | 
                                                                                Nominal C/S (inches) | 
                                                                        N/A 3/8 |