RPC-Overview

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Restek passivation and surface protection layers are deposited using a chemical vapor deposition
(CVD) process in which the item to be treated is heated under vacuum in a large oven. Our current
capacity enables us to treat items up to 6 feet long, or
continuous lengths of coiled tubing exceeding 2000 feet
(600 meters). Items that can be evacuated, such as gas
chambers, can have a volume of up to 3.5 cubic feet.
When the item has been heated to the appropriate temperature, the reacting gases that form the
protective surface are introduced, depositing a durable, amorphous layer that grows and overlays
itself multiple times. The reaction layer penetrates into the lattice of the treated piece and binds
solidly. Consequently, it is possible to work a piece, such as bending a length of treated tubing,
without creating cracks, flakes, or other flaws in the layer. By controlling the variables in the
process, we control the layer type and thickness. Layer thickness ranges from 0.03µm to 30µm,
controlled to our specifications.
Restek Surface Treatments
Restek Performance Coatings • 800-356-1688 • 814-353-1300 • 9