Markez ® O-Rings – High Temperature O-Rings & High Pressure O-Rings
Markez ® high performance perfluoroelastomer O-Rings (FFKM) offer unmatched value for demanding sealing applications. Produced from nearly identical ingredients as higher priced brands, Markez ® compounds are used for high temperature o-rings and high pressure o-rings and chemical resistant o-rings that deliver similar performance to major FFKM brands, with temperature resistance up to 625oF, at a significantly lower cost. Our proprietary processing allow us to supply seals under an inch in size more efficiently. Introduced exclusively to existing customers over 15 years ago, we now have the experience and capacity to offer Markez ® high temperature o-rings and high pressure o-rings to the world.
Markez ® compound number Z1028 is our most popular general purpose FFKM compound due to its relative low cost and broad range of chemical and temperature resistance up to 610 ºF (320ºC). Popular sizes are available in stock with rush manufacturing options available. Used as a cost effective alternative to Kalrez ® 6375, 4079 and 7075 in countless applications across various industries like Petro-Chem, Paint and Ink applications where resistance to harsh solvents is required. We welcome the opportunity to assist you in selecting the compound that provides the best value for your application. Our FFK O-Ring specialist engineers look forward to presenting the test data examples of why Markez ® offers the best value in the industry.
The Marco Markez ® FFKM product line manager has over 25 years of experience including production and application engineering supporting worldwide brands to determine the best value product to perform in demanding applications. Markez ® compounds have been developed to deliver targeted performance and value for many specific applications. Please contact us to assist in selecting the best material for the job.
Markez ® Compound Comparison Table
Don't see what you need? Please contact an FFKM application engineer for assistance in selecting the compound that provides the best combination of performance and price for your specific application.
Compound Number | Brand | Color | Durometer (Shore A) | Relative Price | Typical Inventory Level | Compare To | High Temp (° F) | Low Temp (° F) | Strong Acids | Hot Amines | Steam < 300 °F | Steam > 550 °F | Explosive Decompression | USP Class VI Medical Grade | FDA Compliant | Improved Compression Set Resistance | Plasma Resistance | Semicon | Oil and Gas | Chemical Processing | Life Sciences | Paint Spray Solvents | Aerospace | Alternative Fuels |
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| Markez® | Black | 75 |  |  | Kalrez® 6375 Kalrez® 4079 Kalrez® 7075 | 610 (320ºC) | 5 (-15ºC) |  | | | | | | | ||||||||||
| Best value general purpose performance, higher temperature resistance, wide chemical compatibility. | ||||||||||||||||||||||||
| Markez® | Black | 75 |  |  | Kalrez® 6375 Kalrez® 6230 Kalrez® LS205 | 525 (274ºC) | 5 (-15ºC) | | | | | | | | | | | | | | | |||
| Low cost performance value, nearly universal chemical compatibility, acid, amines, solvents, compression set resistance, FDA compliant and USP Class VI medical grade. | ||||||||||||||||||||||||
| Markez® | Black | 75 | |  | Kalrez® 6375 Kalrez® 6380 Kalrez® 1050LF | 500 (260ºC) | 5 (-15ºC) | | | | | | | | ||||||||||
| General purpose, good in most acids, solvents, improved hot amine and steam resistance with wide range of chemical compatibility. | ||||||||||||||||||||||||
| Markez® | Black | 75 | | | Kalrez® 6375 Chemraz® 505 | 480 (250ºC) | 5 (-15ºC) | | | | ||||||||||||||
| General purpose, good resistance to most paint solvents use in spraying applications. | ||||||||||||||||||||||||
| Markez® | Black | 75 | | | Kalrez® 6230 Kalrez® LS222 | 610 (320ºC) | -5 (-15ºC) | | | | | | | | | | | | | |||||
| FDA compliant, higher temperature resistance, wide chemical compatibility. | ||||||||||||||||||||||||
| Markez® | Black | 75 |  | | Kalrez® 7075 Kalrez® 4079 Kalrez® 8900 | 635 (335ºC) | -5 (-15ºC) | | | | | | | | | | | | ||||||
| Highest temperature FFKM with best long term compression set resistance up to 335ºC, short exposures up to 350ºC, Low outgassing,high purity Wide range of chemical resistance, acid, solvent resistance. | ||||||||||||||||||||||||
| Markez® | Black | 80 |  | | Kalrez® 7375 Kalrez® 6375 Kalrez® 0040 | 610 (320ºC) | 5 (-15ºC) | | | | | | | | | | | | | | | | | |
| Ultimate nearly universal chemical compatibility, higher temperature steam resistance, acid, amines, solvents, compresion set resistance, high pressure AED rapid decompression NACE TM0297-2002, FDA and USP medical grade. | ||||||||||||||||||||||||
| Markez® | Black | 80 | | | Chemraz® 615 Kalrez® 4079 | 620 (325ºC) | -20 (-30ºC) | | | |||||||||||||||
| Wider temperature resistance range, general purpose high temp material. | ||||||||||||||||||||||||
| Markez® | White | 75 | | | Chemraz® 513 Kalrez® 2037 Kalrez® 8575 | 575 (300ºC) | 5 (-15ºC) | | | | ||||||||||||||
| General purpose white, good resistance to oxidation and high temperature exposure. | ||||||||||||||||||||||||
| Markez® | White | 75 | | | Kalrez® 6221 Kalrez® LS205 Chemraz® 625 | 500 (260ºC) | 5 (-15ºC) | | | | ||||||||||||||
| USP Class VI and FDA compliant white FFKM with wide range compatibility. | ||||||||||||||||||||||||
| Markez® | Black | 75 | | | Kalrez® 0040 | 480 (250ºC) | -50 (-45ºC) | | | | | | | | ||||||||||
| Improved low temperature resistance for use in oilfield and gas exploration, wide chemical resistance. | ||||||||||||||||||||||||
| Markez® | Black | 90 | | | Kalrez® 7090 Kalrez® 3018 Chemraz® 510 | 590 (310ºC) | 5 (-15ºC) | | | | | | | |||||||||||
| Higher temperature resistance Norsok M710 AED explosive decompression resistance, excellent resistance to Sour gas and associated chemicals and steam. | ||||||||||||||||||||||||
| Markez® | Black | 90 | | | Kalrez® 0040 | 465 (240ºC) | -50 (-45ºC) | | | | | | | |||||||||||
| Lower temperature resistance, AED explosive decompression resistance, providing the best overall temp range and Chemical resistance. | ||||||||||||||||||||||||
| Markez® | White | 75 | | | Kalrez® 7275 Kalrez® 8575 Kalrez® 9500 | 600 (315ºC) | -20 (-30ºC) | | | | ||||||||||||||
| Improved plasma resistance, higher purity, wider temperature range, low extractables. | ||||||||||||||||||||||||
| Markez® | Clear Amber | 75 | | | Kalrez® 9100 | 540 (280ºC) | 20 (-10ºC) | | | | ||||||||||||||
| Higher purity clear translucent, semiconductor and laser grade material, excellent plasma resistance. | ||||||||||||||||||||||||
| Markez® | Clear Amber | 62 | | | Kalrez® 8002 | 535 (280ºC) | 5 (-15ºC) | | | | ||||||||||||||
| Higher purity amber tinted clear, same as Markez® Z1407 but lower durometer for lower compression force for delicate applications. | ||||||||||||||||||||||||
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The information above is to the best of our knowledge accurate and reliable. However, Marco Rubber makes no warranty, expressed or implied, that parts manufactured from this material will perform satisfactorily in the customer’s application. It’s the customer’s responsibility to evaluate parts prior to use.
Don't see what you need? Please contact an FFKM application engineer for assistance in selecting the compound that provides the best combination of performance and price for your specific application.
FFKM Dupont® Kalrez®, Markez®, Chemraz®, Perlast®, Isolast®, Parofluor®, Perfluorelastomer
Common Names: Perfluoroelastomers, FFKM
Trade Names: Chemraz®, Kalrez®, Markez®, Isolast®, Parofluor® , Perlast®.
- Excellent chemical resistance to most chemicals.
- The highest temperature resistant elastomeric material in the market.
- Can be molded into o-rings, X-rings and a wide variety of custom shapes.
- Available in many different compound and colors targeted for specific applications and markets
- Compounds available to meet FDA, USP Class VI and Explosive Decompression Resistance requirements.
- Molten alkali metals
- Dynamic applications
- -46o to 327o C (-51o to 620o F). Depends on compound and application.