Hymax 2 862-54-0190-16 ND 7.0" EPDM Long Body Coupling 7.48-8.74 O.D.Wide Range 2 HYMAX Long Body Coupling is used for pipe section replacement and connects two pipes of the same or different OD pipe circumferences and materials which covers a wider gap between the pipes with up to a 2. 1" range. Long couplings are typically used when there is uncertainty regarding the gap between the pipes. Hymax 2 Flip Long Body Coupling Features 862 54 0108 16; 4. 0" EPDM Flip Long Body Coupling Advanced Wide Range Coupling with a