Roper Pump G14-338 Complete Buna Mechanical Seal for F Series F50
The Roper G14-338 is a complete Buna mechanical seal for the F Series F50 pump. The F Series is the high pressure end of the Roper gear pump range, working to around 425 pounds per square inch with cast iron housings, hardened steel gears, precision ground steel shafts and flanged bronze journal bearings, and the F50 sits in the middle of that family at roughly 0.050 gallons per revolution of displacement.
High discharge pressure changes what is asked of a shaft seal. The pressure behind the seal presses the faces together harder, so face loading, squareness and the condition of the shaft all matter more than they would on a low pressure transfer pump. Fit the seal complete so the faces are a matched pair, check that the seal chamber is clean and free of old gasket debris, and turn the pump over by hand before it is coupled to confirm there is no binding. Buna is the standard elastomer on the F Series and suits the filtration, burner supply and bearing lubrication duties these pumps are usually bought for.
Key Features
- Genuine Roper Pump Company mechanical seal, part number G14-338
- Specified for the F Series F50 high pressure gear pump
- Supplied complete with matched rotating assembly and stationary seat
- Buna elastomer, the standard specification on F Series pumps
- Suited to the elevated discharge pressures the F Series is built for
Applications
- F Series F50 high pressure gear pumps
- Oil filtration carts and conditioning skids
- Pipeline pressure boosting
- Fuel burner supply systems
- Bearing lubrication and high pressure transfer
Specifications
- Brand: Roper Pump Company
- Part Number: G14-338
- Part Type: Mechanical seal, complete
- Elastomer: Buna
- Fits: Roper F Series F50
- Pump Family: F Series, cast iron housings with hardened steel gears and flanged bronze journal bearings, rated to roughly 425 pounds per square inch
- Condition: New
Frequently Asked Questions
Q: What does the 50 in F50 refer to?
It is the displacement code. In the F Series figure number the digits after the F give theoretical displacement, so the F50 is a larger swept volume per revolution than an F35 and smaller than an F75.
Q: Does high discharge pressure shorten seal life?
It can if the pump is run at the top of its range continuously. Keeping the relief valve correctly set and avoiding dead heading does more for seal life on an F Series than any component change.
Q: Should I replace the bearings while the pump is open?
Worth inspecting at least. A bronze journal bearing that has opened up lets the shaft orbit, and that orbit is transmitted straight into the seal faces.
Q: Is graphite packing an option instead?
The F Series is offered with graphite impregnated Teflon packing as well as a mechanical seal, but the two arrangements use different housing parts, so it is not a straight swap.
Not sure this is the right part? Send us a Picture of the pump plate on your pump and the CLR Marine team will confirm the correct mechanical seal before you order.
CLRMarine
