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UNCD® Seals bring the tribological benefits
of diamond to mechanical pump seals. The faces of UNCD Seals are
processed using ADT’s patented technology, enabling the
following benefits:
- Longer lasting seals in demanding applications.
- More resistant to dry and poor lubricating environments.
- Enables the use of hard faces in applications pumping thermally sensitive media.
- Reduced energy consumption.
The UNCD Seals product family has its own website, www.diamondseals.com,
which contains more detailed information about UNCD Seals.
Value
The nanometer-sized grains of UNCD result in extremely smooth
as-deposited films that provide the wear resistance and reduced
friction characteristics of diamond. Cooler sealing surfaces extend
the life of the seal, which provides increased robustness, reduced
maintenance costs, and the ability to use SiC faces in temperature
sensitive applications. Diamond is chemically inert which also
permits its use in highly corrosive environments.
Validation
The coefficient of friction (CoF) of UNCD running against SiC
has been measured nominally at 0.02 – 0.04, well below the
seal industry standard when running “hard-on-hard”
(SiC vs. SiC). These friction results were measured using actual
pump seals and were confirmed indirectly by measuring a significant
reduction in seal chamber temperatures when UNCD seals were running
in 1.375 shaft ANSI pumps. The wear resistance of UNCD versus
carbon faces in an aggressive hot-water evaluation (250°F
and 150 psig) has been measured at orders of magnitude lower than
the wear resistance of α-SiC (self-sintered) faces running
against carbon.
Readiness
A multi-spring component seal with UNCD treated SiC is available
for commercial use and evaluation for ANSI pumps with shaft diameters
ranging from 1.125 to 2.125 inches. These seals can be purchased
either through the UNCD Seals website at http://www.diamondseals.com
or by contacting ADT directly. Upcoming UNCD Seals products will
include a line of cartridge seals targeted for ANSI pumps and
extensions the current component seal offering, including primary
(rotary) faces of SiC and various grades of carbon.
Partnerships and distributors
We are actively seeking partners that are interested in applying
the benefits of UNCD to improve current and develop new novel
products enabled the benefits of diamond.
For further information, or to reach a sales representative,
please contact ADT. |
