LAS VEGAS -- To improve and minimize variation of rod counter surface quality for hydraulic applications, Simrit has specified six additional parameters. Expanding on the three parameters that are traditionally used to measure surface finish and define sealing technology requirements, these new attributes allow engineers to more accurately predict, and therefore anticipate, seal behavior without additional measurements or time.

"The precise evaluation of an applications 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 components 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.

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, Simrits newly identified methodology can be applied to numerous markets and dynamic applications.

Source: Freudenberg