How it connects
The watthour meter's outer flange seats against this stamped annular lip protruding through the front cover. An external U-channel cross-section split metal sealing ring wraps over both flanges simultaneously and is tightened via a screw.
Male and female halves
Male or protruding locating rim that seats face-to-face against the meter base flange, clamped circumferentially by an external female sealing ring.
Usually connects to
- Ring-type meter sealing ring
- ANSI C12.10 Form S watthour meter base rim flange
Common sizes
- Nominal 7-inch diameter (approx. 6.875 to 7.0 inches outer diameter) standardized to mate with ANSI Type S socket meters.
Where it is used
electric utility meteringresidential electrical servicescommercial electrical meter centers
Variations
- Stamped integral sheet metal lip
- Welded or riveted adapter collar (ringless-to-ring conversion kit)
- Die-cast enclosure lip
How to recognise it
A circular raised rolled lip (approx. 7 inches across) projecting forward from the front steel or aluminum cover of an electric meter box around the meter opening.
Often confused with
| Confused with | How to tell them apart |
|---|---|
| Ringless meter socket cover opening | Ringless socket covers have a plain, flat drawn opening without a raised rim; the cover itself overlaps and clamps down directly over the meter flange. |
| Meter sealing ring | The sealing ring is the separate removable split band with a latch or screw that clamps around the enclosure lip and meter flange. |
Also called
meter socket ring flangemeter socket cover annular lipmeter enclosure bezel rimring-style meter socket collar
Good to know
In utility metering conventions (ANSI C12.7 / C12.10), 'ring-type' indicates that physical retention and security sealing are provided by an external sealing ring around this lip and the meter flange, in contrast to 'ringless' covers.
Design with real parts
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