Perfluoroelastomer Compounds provide sealing for nearly any medium.

Press Release Summary:

Offering resistance to reactive media, organic solvents, acids, and alkalis in broad range of temperatures and pressures, Simriz 506 is suited for custom molded parts while Simriz 509 is intended for O-rings. Products contain inert mineral fillers to prevent leaching when they come into contact with media to be sealed. Maintaining cold flexibility down to -53.6°F and operating in temperatures up to 446°F, Simriz seals meet requirements of pharmaceutical and food and beverage industries.

Original Press Release:

Process Seals Expands White Simriz® 506 and 509 Compounds Into North American Processing Market

ELGIN, Ill., -- Offering exceptional resistance to reactive media, organic solvents, acids and alkalis in a broad range of temperatures and pressures, the Simriz® family of perfluoroelastomer (FFKM) materials has been optimally designed for demanding applications. Recently, Process Seals introduced the newly developed white Simriz compounds to the North American processing industry.

Simriz 506 is a white compound for custom molded parts, whereas Simriz 509 is a white compound for use in O-rings. The high-performance FFKM material provides reliable sealing for nearly any medium and, due to its white color, is ideal for demanding hygienic applications in the pharmaceutical, and food and beverage industries.

The Simriz 506 and 509 compounds contain inert mineral fillers to prevent leaching when they come into contact with the media to be sealed, which is an essential prerequisite for seals in pharmaceutical and biotechnological applications. To meet the needs of pharmaceutical facilities and sterile environments, the compounds were developed to comply with all pharmaceutical-related specifications, including United States Pharmacopeia (USP) Class VI. Additionally, the materials are compatible for use in food and beverage applications, conform to the Food and Drug Administration (FDA) and EC 1935/2004 regulations, and are guaranteed to be free of animal-derived ingredients.

Simriz 506 and Simriz 509 materials have demonstrated good mechanical performance, excellent chemical resistance and low susceptibility to leaching in numerous tests. Further, in comparative immersion tests in ethylenydiamine, acetonitrile, ethyl acetate and other pharmaceutical-relevant solvents, they have demonstrated superior performance compared to white competitor compounds and are comparable to premium black compounds.

Simriz is a family of FFKM compounds that are designed to provide superior chemical resistance and thermal stability. Simriz seals maintain their cold flexibility down to negative 53.6 degrees F and can be used in operating temperatures up to 446 degrees F. Simriz materials possess the resilience of an elastomer with chemical resistance approaching that of polytetrafluoroethylene (PTFE).

Process Seals, a division of the international Freudenberg Sealing Technologies, is a sealing solutions supplier for the food and beverage, and pharmaceutical industries. As a specialist in process engineering applications, the company has more than 160 years of technological knowledge and market expertise. For more information, please visit

Freudenberg Sealing Technologies is the largest member of the Freudenberg Group, a family enterprise with more than 34,000 employees in 59 countries. Having started with the first Freudenberg Simmerring® in 1929, the technology specialist now offers a broad range of sealing solutions consistently tailored to the needs of its customers in various branches.

Freudenberg Sealing Technologies is linked to customers by five sales channels, each of which represents an established brand in its respective market: Automotive Sealing (automotive industry/original equipment); Corteco (automotive industry/aftermarket); Simrit (general industry); Merkel (heavy industry); and Process Seals (process engineering).

Freudenberg Sealing Technologies has major branch offices in Europe, North and South America. Together with its partners NOK Corporation, Japan, Sigma Freudenberg NOK, India and NOK-Freudenberg Group, China, the company forms a worldwide network providing customers around the globe with reliable high-quality products.

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