Kalrez
- January 30, 2024
Kalrez® Spectrum™ 7075
Kalrez FFKM parts have been the material of choice for mechanical seals, valves, and other chemical and hydrocarbon processing applications for 25 years.
Kalrez Spectrum 7075 expanded on the capabilities of Kalrez 4079 by offering much lower compression set, increased seal force retention, broader chemical resistance and higher temperature stability.
Kalrez Spectrum 7075 joined the family of Kalrez Spectrum™ products designed specifically for the chemical processing industry. As a newer compound, 7075 contains enhanced physical performance properties, including very low compression set and improved seal force retention. To provide even greater sealing performance in dynamic applications where low friction is required, 7075 O-rings have a glossier finish than other Kalrez parts.
This video discusses, at a very high level, the characteristics of Kalrez 7075.
- November 01, 2023
Important Kalrez® Lead Time Update
As we mentioned in our messaging earlier this year, DuPont was in the final stages of opening a new Kalrez® perfluoroelastomer parts manufacturing facility at their Tralee Park Annex site in Newark, Delaware.
We are happy to announce that the new facility is completed and running at full capacity.
- August 11, 2023
Comparing Conventional Elastomers to DuPont™ Kalrez® FFKM
Today, we continue our series on the world’s most popular perfluoroelastomer, Kalrez.
The agenda for part two of our video series on FFKM will compare conventional elastomers vs. Kalrez®. We will take a deep dive into what makes Kalrez so special for a wide variety of industries and applications worldwide.
Since Kalrez® parts are predominately used in sealing systems, it is useful to review the basic properties of the most popular seal materials compared to the world's most well known FFKM, Kalrez®.
- June 01, 2023
The semiconductor industry is a specialty market that requires seals to work in extreme chemical and temperature environments - and these seals must block materials from entering the fluid stream.
There are several different ways for seals to accomplish this task, but the first consideration is the operating characteristics.
Operating Characteristics of Seals for the Semiconductor Industry
For static seals where no relative motion exists, the use of perfluoroelastomers, or FFKM rubber, is considered a first consideration.
Gallagher Fluid Seals is a designated distributor of
- April 19, 2023
Video - What is DuPont™ Kalrez®? An Introduction to FFKM
The history and science of Kalrez FFKM
Many of Gallagher's customers use Kalrez FFKM for their equipment or processes. It's known worldwide for its effectiveness in the harshest applications - able to withstand nearly all media and extreme temperatures.
But what makes Kalrez so special? Why is it it far superior to other elastomers?
This video will dive into what makes Kalrez FFKM different than other conventional elastomers when it comes to sealing in the most demanding environments. Learn about the technical specification and the science behind the world's most popular perfluoroelastomer.
- March 30, 2023
New DuPont Kalrez FFKM Manufacturing Facility
DuPont is in the final stages of opening a new Kalrez® perfluoroelastomer parts manufacturing facility at their Tralee Park Annex site, located at 322 Ruthar Drive, Newark, DE 19711.
Included in the processes and capabilities at their new facility will be the manufacture, finishing, inspection, packaging, and shipping of Kalrez® perfluoroelastomer parts. DuPont intends to begin shipping parts processed at the new facility starting in August 2023.
The quality management system (QMS) for the Tralee Park location (5
- March 09, 2023
The PTFE Seal Challenge
The filling line at Dow AgroSciences plant in Drusenheim, France - a global leader in pest management and biotechnology products - processes aggressive solvents, surfactants and concentrated herbicides at temperatures ranging from 10 to 45 °C, and pressures from 1.5 to 3.5 bars Eff. Filling machine valves on the line were fitted with dynamic PTFE O-rings, while the machine hoses were equipped with static O-rings, also of PTFE.
Each time the mechanical maintenance team performed a clean-in-place procedure at 80 °C, or made a product change on the filler, the PTFE seals became mechanically damaged. This meant they had to change the PTFE O-rings on a daily basis, since seal lifetime never extended beyond 24 hours before replacement.
In a different application at the same plant, seals of FEP/FKM, fitted to the piston rod of a Type SRC Alfa Laval valve, failed regularly after only
- February 23, 2023
Kalrez® 0040 and Kalrez® 0090
What are the similarities and differences between these two special purpose low temperature FFKM compounds?
It's known that DuPont™ Kalrez 0040 and Kalrez 0090 are two of the most popular low temperature perfluoroelastomers in the marketplace.
Each compound has unique physical properties and can be better in certain applications. In fact, GFS engineers are often asked for compound guidance for these low temperature FFKMs.
This video discusses, at a very high level, the similarities and differences between Kalrez 0040 and Kalrez 0090.
- February 03, 2023
Kalrez 4079 and Kalrez 6375
What are the similarities and differences between these two general purpose Kalrez perfluoroelastomers?
It's known that DuPont™ Kalrez® 4079 and Kalrez® Spectrum™ 6375 are two of the most popular FFKMs in the marketplace.
Here at Gallagher Fluid Seals, we are often asked about the differences and which compound may be better for an end-user's application.
This video discusses, at a very high level, the similarities and differences between the FFKM compounds.
- November 30, 2022
Recognized as the leading supplier of perfluoroelastomer parts for over 40 years, DuPont offers a variety of high performing products that are formulated to give the best possible seal performance in numerous aggressive environments. Excellent balance of finished properties is achieved through careful use of proprietary polymers, cure systems, fillers and additives, resulting in superior seals for a broad range of applications.
This Selector Guide summarizes key physical properties and attributes of the most commonly used Kalrez® products for the Chemical Process Industry, providing general chemical compatibility guidance.
For more detailed information about each product, please consult the DuPont™ Kalrez® Application Guide online or contact your DuPont regional location to request assistance from a Kalrez® Technical Service & Development Engineer to assess performance fit in your specific application.