What is an NFPA interchangeable cylinder?
A. NFPA stands for National Fluid Power Association. This organization set up standards for all manufacturers of the tie rod design. Mounting codes were established to ensure that all cylinders of different brands would dimensionally interchange. Where NFPA cylinder manufacturers differentiate themselves are their internal designs. In other words, an MP1 mounting of one brand is the same external dimensions as a different brand. Because of design changes, a seal kit from one cylinder will not interchange with another.
