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Two o-rings are available for the cell cap on the Model 2040 Consistometer.
The rubber o-ring is easier to use, but is not suitable for tests involving high
temperature or pressure. The metal o-ring is more durable, but requires extra
attention when tightening the cell cap. Once you have chosen an o-ring, place
it into the test cell in the o-ring groove.
The o-ring (either metal or rubber) must be replaced after any test above
500°F (260°C).
The installation of the metal seal ring in the HTHP Consistometer is a straight
forward procedure. If done correctly, the seal ring life can be extended
indenitely. The key will be to tighten the chamber lid to crush the o-ring just
enough to prevent the cell from leaking.
If the o-ring is over crushed, the upper surface of the o-ring will be level with
the inside lip. This will prevent the mandrel from making a good seal and
keep the cell from leaking.
1. Mark the cell body and cap to indicate full closure. If the cell assembly
has these markings, skip to Step 2.
a. Place the mandrel in the cell with no o-ring installed.
b. Screw on the cap until the cap stops on top of the mandrel.
c. Using a Sharpie, make a light mark indicating where the cap and body
line up.
d. Remove the cap and mandrel.
2. Install the o-ring into the o-ring groove inside the cell. Ensure the o-ring is
sitting ush with the o-ring groove.
Installed
Metal O-ring
Appendix
Metal Seal Ring
Installation
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