“Industry challenges, such as temperature, hydrolysis resistance and bio-friendly fluid compatibility, will consistently drive the need for more robust sealing solutions,” said Joel Johnson, vice president of technology, Simrit. “As a materials and sealing innovator, Simrit anticipated these upcoming changes and developed next-generation materials for issues that our customer’s are now encountering. This forward-thinking allows us to serve our customers’ current problems with established and proven solutions.”

For customers currently using the Disogrin 9250 material, the NOK U641 urethane is an alternative solution that is hydrolysis/glycol resistant and increases the long term operating temperature of the system to 110°C with standard and biodegradable hydraulic oils. It can be run in the same tooling as Disogrin 9250 and has been a proven solution for more than a half decade. For those looking to significantly increase the life target of a system, substituting a NOK A505 NBR rod seal (with proper back-up) and a U641 buffer can double the life of this system.

NOK UH05 urethane is a hydrolysis/glycol resistant solution for 120°C systems with standard and biodegradable hydraulic oils. In particular, NOK UH05 (40°C to 120°C temperature range) seals have been successful in hydraulic cylinders exposed to extremely harsh conditions.

It is rare for a material to not only have this high of a temperature range in the industry (allowing for use in a Columbian coal mine), but also one of the lowest temperature capabilities (allowing for use in Antarctic applications). Traditionally, a manufacturer would require two different sealing packages for each application. Using a NOK UH05 (buffer) in combination with NOK G928 HNBR rod seal (with proper back-up) can double the life of a system at 120°C, while providing exceptional low temperature capabilities.         

For additional information or to speak with a Simrit expert about the company’s U641 or UH05 material solutions, stop by the Simrit booth (#S-13657) at the IFPE 2011 Show held at the Las Vegas Convention Center from March 22 to 26.

Simrit is part of the Freudenberg and NOK Group Companies, which have total annual sales of more than $7 billion. The global Freudenberg and NOK Group offers an extensive portfolio of precision-manufactured products for the aerospace, appliance, automotive, marine, medical, off-highway equipment, recreational vehicle and renewable energy markets. For more information, visit the Simrit website at www.simrit.com.

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Editor’s Note: For high-res images of Simrit’s UH05 material, please contact Adriana Ferrari at 248-269-1122 or aferrari@bianchipr.com.

Simrit’s CASCO seal design integrates sealing elements and contact surfaces in a single cartridge that press fits into a bore with complimentary assembly tools. Uniquely, the main lip is perpendicular to the shaft and axially loaded to extend service life, which also addresses difficult operating conditions, such as dynamic end play and radial run-out.

“Meeting and surpassing customer and application needs often requires integrating new thinking with established expertise,” said Joel Johnson, vice president of technology, Simrit. “Our CASCO Cassette Shaft Seal is just one example of how Simrit takes a different approach to sealing to ensure we’re continually providing our customers with solutions that further optimize their products and technologies.”

Applicable for unidirectional applications with a primary shaft range of 70 to 180 mm, the main lip of the design contacts a surface perpendicular to the shaft (rather than radially). It uses an axial (or side-located lip) to incorporate a hydrodynamic pumping helix feature that is molded into the lip and runs against a metal sleeve. This is augmented by the dynamic slinger effect of the rotating inner sleeve. Further, an integral excluder dust lip of non-woven polyester allows positive contact to the shaft, while preventing dirt ingress without high wear or heat build-up. 

Simrit’s CASCO Cassette Shaft Seal demonstrated positive results when tested (more than 55 times) under such extreme operating conditions as: extreme temperatures; abrasive fluids / chemicals; harsh environments; etc.  As a result, it offers a service life potential of more than one million miles. Further, the Simrit’s CASCO Cassette Shaft Seals provides:

• Extremely low torque drag with low heat generation and excellent wear resistance;
• Enhanced oil retention due to the centrifugal “slinger” action of the wear sleeve;
• Highly compatible Fluorocarbon (FKM) compound;
• Superior sealing performance;
• High shaft eccentricities and vibrations; and
• Integrated wear sleeve to effectively lower the complete system cost.

For additional information or to speak with a Simrit expert about the company’s CASCO Cassette Shaft Seals, stop by the Simrit booth (#S-13657) at the IFPE 2011 Show held at the Las Vegas Convention Center from March 22 to 26.

Simrit is part of the Freudenberg and NOK Group Companies, which have total annual sales of more than $7 billion. The global Freudenberg and NOK Group offers an extensive portfolio of precision-manufactured products for the aerospace, appliance, automotive, marine, medical, off-highway equipment, recreational vehicle and renewable energy markets. For more information, visit the Simrit website at www.simrit.com.

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 Editor’s Note: For a high-res image of Simrit’s Cassette Shaft Seals, please contact Adriana Ferrari at 248-269-1122 or aferrari@bianchipr.com.

“The precise evaluation of an application’s surface finish is critical to the overall effectiveness of the entire sealing system,” said Joel Johnson, vice president of technology, Simrit. “Based on the Abbott Firestone Curve and ISO methodology, our new factors modernize the standards for counter surface examination, which helps extend the life and increase the performance of sealing systems.”

Simrit determined that, while important, the traditional three testing parameters – R_a, R_max and R_z – were not adequate to accurately classify surface abrasiveness and a component’s potential to hold lubricant. To address current and future industry trends and expectations, Simrit developed an improved methodology that better identifies surface characteristics over a defined length and complete depth of the profile.

This improved methodology consists of the following attributes that work to more accurately define surface texture and, as a result, improve the life of the sealing system:

• R_k –  core roughness depth;
• R_pk –  mean height of the peaks protruding from the roughness core profile;
• R_vk –  mean depth of the valleys protruding from the roughness core profile;
• R_pkx –  the full peak height;
• R_vkx –  the full valley depth; and
• M_r – material ratios (dependent on R_pk and R_vk).

Initial in-house testing by Simrit indicates that the new parameters, through the more accurate evaluation of surface characteristics, are able to reduce part wear and extend system life. Additionally, Simrit’s newly identified methodology can be applied to numerous markets and dynamic applications.

For additional information or to speak with a Simrit expert about the company’s Surface Finish technology, stop by the Simrit booth (#S-13657) at the IFPE 2011 Show held at the Las Vegas Convention Center from March 22 to 26. For additional graphics, video and information visit http://www.simritna.com and select the Brochures or Media tab.

Simrit is part of the Freudenberg and NOK Group Companies, which have total annual sales of more than $7 billion. The global Freudenberg and NOK Group offers an extensive portfolio of precision-manufactured products for the aerospace, appliance, automotive, marine, medical, off-highway equipment, recreational vehicle and renewable energy markets. For more information, visit the Simrit website at www.simrit.com.

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Editor’s Note: For a high-res image or video of Simrit’s Surface Finish technology, please contact Adriana Ferrari at 248-269-1122 or aferrari@bianchipr.com.

Quote taken from the article:

Key points:
• Aerospace applications may call for seals that are fireproof, resist fluids, and work over a large temperature range.

• Viscoelastic properties help elastomeric seals work in subfreezing temperatures.

• Semiconductor and alternative energy applications require low-maintenance seals that resist chemicals and weather.

The comprehensive guide takes customers through Simrit’s main markets, including: aerospace; agriculture and construction; semiconductor; heavy duty truck; renewable energy; process industries and power transmission. In each market, specific seal applications are identified to help customers better understand and utilize Simrit’s extensive products and capabilities.

In addition to the company’s extensive product lines, the brochure highlights Simrit’s engineering and manufacturing expertise, as well as its advanced technology that far exceeds each industry’s standards. As a quick reference, the last page of the brochure showcases the different product groupings and possible applications. Each product is manufactured with the uncompromising commitment to the highest possible quality.

To obtain a copy of Simrit’s Overview brochure, please visit www.simritna.com and use the Literature Request Form to have a copy shipped directly to you, or contact Anna Blackburn at anna.blackburn@simrit.us.

The Simrit Division is based at Freudenberg-NOK’s headquarters in Plymouth, Mich., and is part of the Freudenberg and NOK Group, which has total annual sales of more than $12 billion. Simrit offers an extensive portfolio of sealing solutions for the aerospace, appliance, energy, heavy duty truck, industrial, marine, mobile machinery, recreational vehicle and semiconductor markets.          

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Editor’s Note:
For a high-res image of Simrit’s new brochure, please contact Adriana Ferrari at 248-269-1122 or aferrari@bianchipr.com.

Simrit’s encryption process marks product data on seals and elastomers to guard against counterfeiting.

Please click here to see Machine Design’s article that mentions Simrit and our products.

Disogrin® 7695

An article on Simrit’s Fluid Power seals was featured on Today’s Fluid Power website.

http://www.onlinetfp.com/news/Fluid-Power-Seals/2925