Diamond mechanical pump seal, 1.375"

The outstanding attributes of diamond are now available in mechanical seals at prices comparable to high performance silicon carbide (SiC) face seals. UNCD^® Seals and UNCD^® Faces are made with a patented form of diamond that is so smooth that the faces can be run directly against conventional blister resistant carbons and silicon carbides. Whether you are a pump user or a pump (or seal) manufacturer, Advanced Diamond Technologies (ADT) has a convenient way for you to take advantage of the unsurpassed properties of diamond.

For pump users not currently working with a specific seal manufacturer, UNCD Seals are a convenient and affordable way for you to take advantage of the compelling benefits of smooth diamond. If you have standardized on a particular brand of seal, please contact your seal manufacturer or distributor and ask them to make UNCD Faces available in their products.

For the seal or pump manufacturer who wants to offer the extraordinary performance of UNCD in their branded products, UNCD Faces are available. Customers are asking for diamond seals because of their durability, robustness and energy savings. ADT offers you a time to market advantage and a simple way to embed diamond faces into your products.

Benefits of UNCD Seals/Faces:

• 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.
• Increased energy efficiency.

Products

Component Seals: A line of O-ring pusher seals with diamond mating rings and blister resistant carbons is available for pump users wanting a complete mechanical seal. Both antimony-filled carbon primary (rotaries) and self-sintered SiC primaries (hard-on-hard applications) are available upon request.

Cartridge Seals: A line of UNCD cartridge seals for ANSI pumps with shaft diameters between one and two inches will be available in the summer of 2008.

UNCD Stationary and Rotary Faces (for resale and OEM only): UNCD Faces are available to pump and seal manufacturers to enhance the performance of their branded mechanical seals. ADT offers seal faces in a wide variety of types and sizes to meet the requirements of seal manufacturers, pump manufacturers and OEMs. Due to the outstanding low friction of UNCD, these faces perform superbly with a variety of counterface materials, including carbon and SiC.

UNCD Seals outperform SiC faces in extreme wear tests. After thousands of hours of operation, UNCD Seals have consistently outlasted SiC faces in poor lubricating conditions of 250-300 °F hot water. In head-to-head industrial tests, UNCD Seals have shown negligible or minimal wear whereas SiC faces experienced deep grooving resulting in pump leakage. UNCD Seals have also been shown, when running against SiC, to have coefficients of friction (CoF) of 0.02-0.04. These are well below the typical values when running SiC in hard-on-hard applications. The reduced friction during operation of UNCD Seals results in reduced seal cavity temperatures when running in ANSI slurry pumping applications. Further technical details can be found here.

Special Applications

For specific applications that are not addressed by our current product offerings, please contact us to discuss your application.