Graco 557507 Trabon MD Plug Gasket

Trabon MD Plug Gasket – Graco Part 557507

Compatible Systems

• Graco Trabon progressive lubrication components
• Equipment whose Graco parts list calls for part number 557507

The Graco 557507 Trabon MD Plug Gasket is a gasket sold under Graco part number 557507. A gasket seals the joint between two mating surfaces. Trabon is a series-progressive lubrication line, including modular divider valves, that Graco lists under Vehicle Service and Automatic Lubrication.

About the Trabon progressive lubrication components

A divider valve assembly is an inlet section, valve sections and an end section held together by tie rods. While lubricant is supplied under pressure to the inlet the valve pistons cycle progressively; if flow stops the pistons stop and resume at the same point in the cycle. Graco lists uses such as: Metering oil or grease to multiple lube points from a single pump in an automatic lubrication system; Machinery lubrication with Trabon Series-Flo divider valves driven by a Lubemaster pump. Trabon divider valve assemblies dispense lubricant progressively from a single supply. If lubricant flow stops, the divider valve pistons stop and resume at the same point in the cycle when flow returns. Divider valve sections are stamped with the valve style, the discharge per stroke, and the number of outlets.

What the Terms in the Part Name Mean

• Trabon: Graco progressive lubrication brand (divider valves, rupture indicators).

Before You Order

• Match the part number exactly: seals of similar size can differ in profile or material.
• Check your repair manual for whether related seals should be replaced at the same time.
• Have your equipment model, and the serial number if available, ready if you contact us for help.

Service Notes

• Follow the pressure relief and lock-out steps in your Graco manual before servicing any pump, valve, applicator or electrical part.

Frequently Asked Questions