The sample chamber preparation is a crucial step for a successful high pressure experiment. This is done in two steps: the gasket pre-indentation and the gasket drilling.

The gasket pre-indentation is essential to limit its plastic deformation when applying high load during the experiment. If the gasket is not pre-indented to the right thickness then it will deform when increasing pressure which can induce sample loss and a high risk of damaging the anvils.

The gasket drilling is very important since it will “shape” the sample chamber. A perfect quality hole will increase the chance to reach higher pressures.

If a user doesn’t have access to a driller, Almax easyLab also provides a gasket pre-indentation and  drilling service.

Gaskets can also be pre-indented by the end-user and then ask only for the drilling service . Note that if the gasket are sent pre-indented by the end-user, we normally ask few more gaskets than that desired final amount. If pre-indented by the customer, it is also possible that once we start drilling the gasket we realize that the upper and lower indentation are not concentric. We will advise you if this is the case.

Almax easyLab can also pre-indent gaskets for customers. In that case, we use  WC dies to pre-indent with a round mark of a slightly smaller diameter than the final actual culet size. The hole is then drilled. When used the customer just has to indent the drilled gaskets a bit more with his own diamond anvils to finalise the marking and position of the gasket. Note that the smallest culet size we can meet the demand for is C = 0.20 (dies of 0.25 are used in such a case).

We normally do not offer this service for bevelled anvils in particular for very small C values (i.e C equal or less than 0.20mm). The exception being for bevelled anvils for electrical resistivity with C equals or more than 0.50mm).

Note: Minimum Order Quantity (MOQ) = 10 gaskets