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2 to 3 week Turn Around

FFKM Molded Seals by M‑Cor

We proudly expand our product line with the latest Perfluoroelastomer (FFKM) O‑rings. By combining our engineering expertise with advanced material solutions, we ensure these O‑rings meet the stringent requirements of various industries. As a result, they offer exceptional chemical resistance, reliable thermal stability, and robust mechanical properties.

M‑Cor Inc Recommends These Alternatives to KALREZ 4079, 6375, and Others

Tecnoflon® PFR 95HT Perfluoroelastomer (FFKM) – Fluorine Content: 72%

FFKM Molded seals by M-Cor offer both a broad operational range and high compression set resistance, thanks to its peroxide curing system. Consequently, it withstands chemicals, acids, caustics, ketones, aldehydes, esters, ethers, methanol, solvents, sour gases, hydrocarbons, steam, and hot water.

Furthermore, it performs well in applications from –10 °C to 300 °C. Not only does it support elastomeric sealing elements like O‑rings and gaskets, but it also holds FDA registration for food contact, making it suitable for food processing equipment.

Additionally, we offer this material as raw polymer in 1 kg and 5 kg boxes. To ensure safety, users should avoid skin and eye contact as well as inhaling fumes. Finally, it blends seamlessly with fluoroelastomer compounding ingredients using two-roll mills or internal mixers.

Tecnoflon® PFR 94 Perfluoroelastomer (FFKM) – Fluorine Content: 72%

Solvay developed this material specifically for aggressive media sealing while also ensuring superior compression set values. Compared to other materials, it performs reliably from –10 °C to 230 °C. In addition, it offers robust resistance to hot organic and inorganic acids, caustics, ketones, aldehydes, esters, ethers, alcohols, fuels, solvents, sour gases, hydrocarbons, steam, hot water, ethylene and propylene oxide, mixed process streams, potent active pharmaceutical ingredients (APIs), and aggressive cleaning agents.

As a result, this formulation excels in steam‑in‑place (SIP) and clean‑in‑place (CIP) procedures. Moreover, it supports the manufacturing of elastomeric sealing elements such as O‑rings and gaskets. Like PFR 95HT, it is FDA-registered for food contact applications, ensuring suitability for food processing equipment.

To meet various industry needs, we provide this material in 1 kg and 5 kg boxes. As with all fluoroelastomers, users should follow safety guidelines to prevent skin or eye contact and inhalation of fumes. Furthermore, it mixes easily with the cure system and other typical compounding ingredients using two-roll mills or internal mixers.

Common Applications for Tecnoflon® PFR 95HT and PFR 94

 

Both materials serve as excellent choices for sealing elements—O‑rings and gaskets—used in the chemical, petrochemical, food processing, pharmaceutical, aerospace, and semiconductor industries. Due to their exceptional properties, they help maintain efficiency and reliability in critical applications.

FFKM SAMPLE DESIGNS

Food Processing Applications

Since both materials hold FDA food contact registration, they are well-suited for food processing equipment. In particular, they handle various food types, including non‑acid and acid aqueous products, dairy products, low‑moisture fats and oils, beverages, and bakery items. To comply with industry regulations, we follow strict compounding guidelines that limit specific curatives, fillers, and process aids.

Fluid Resistance

Our products demonstrate outstanding resistance to inorganic and organic acids, alkalis, water/steam, ketones, esters, ethers, aldehydes, alcohols, hydrocarbons, and sour gas. Because of this, volume swelling remains below 10%.

However, we do not recommend their use in highly fluorinated fluids, as performance may be compromised.

Properties

To highlight key differences, Tecnoflon® PFR 94 has a specific gravity of 2.06 g/cm³, whereas PFR 95HT measures 2.05 g/cm³. For ease of handling, we supply both in translucent, slab form.

Furthermore, their Mooney viscosities differ—35 MU for PFR 94 versus 75 MU for PFR 95HT. Despite this, both materials share a dielectric constant (ε′) of 3.50, a loss factor (tan δ) of 0.030, and a linear coefficient of thermal expansion of 3.5 × 10⁻⁴ 1/K.

Effect of Additives and Curing

We carefully select filler and curative combinations to optimize performance. For example, Tecnoflon® PFR 94 achieves superior acid resistance when paired with MT N990 carbon black and pure curatives. Similarly, we recommend barium sulfate with pure curatives for colored compounds.

Excellent Chemical and Thermal Resistance

Our FFKM O‑rings withstand exposure to more than 1,800 chemicals. Because of this, they serve as an ideal solution for chemical processing, semiconductor fabrication, and pharmaceutical manufacturing.

Equally important, they sustain reliable performance at temperatures up to 327 °C, making them a top choice for aerospace applications.

Enhanced Performance and Durability

The fully fluorinated structure of our FFKM Molded Seal by M-Cor provides not only exceptional chemical and thermal resistance but also outstanding mechanical strength. As a result, they exhibit remarkable resistance to compression set and maintain seal integrity under fluctuating pressures and temperatures.

Diverse Industrial Applications

Given their superior durability, our FFKM Molded Seals by M-Cor excel in a wide range of industries, including:

• Aerospace: Ensuring resilience in extreme temperatures and aggressive chemical environments.
• Oil and Gas: Withstanding high temperatures and harsh chemicals.
• Semiconductor Manufacturing: Offering high chemical resistance for precision applications.
• Pharmaceuticals and Biotechnology: Providing chemical inertness for sensitive processes.
• Chemical Processing: Delivering long-lasting sealing solutions for aggressive chemicals and high temperatures.

Our Commitment to Quality

We dedicate ourselves to manufacturing excellence. By maintaining the highest quality standards, we ensure our FFKM O‑rings enhance operational efficiency, reduce maintenance requirements, and maximize uptime.

For businesses seeking reliable sealing solutions, our O‑rings offer long-term performance and durability. To learn more, please contact us.

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Note: Compound Fluorine content 72%