One of the improvements that DME has made over time is to move many of the hot runner designs from a pre-bent tubular heater design over to a flexible tubular heater design. A “Flexible” tubular heater offered by DME can be identified by the distinctive segmented heater body. The heater is retained inside the heater groove with standard retaining rings which are installed periodically over the manifold heater groove. DME manifolds built in the past with conventional tubular heaters do not use retaining rings or clips to retain the manifold heaters, and instead are pressed into place and may use a set of retainer plates to help retain the pre-bent tubular heaters in place. The DME Meteor Manifold is constructed with pre-bent tubular heaters. Replacement heaters can be ordered for your particular manifold system by calling your DME Customer Service Representative.