FFKM o-rings are the highest high-performance family of o-rings with the highest temperature (up to 620F) and ultimate chemical resistance. FFKM o-rings are specifically manufactured for extreme applications where up time performance is worth the significantly higher cost compared to other basic materials. Marco Rubber's high-volume allows substantial savings on FFKM o-rings from the various FFKM brands like Kalrez ® and Chemraz® best value Markez® o-rings, for high-performance FFKM o-rings without the high-performance price tag.
Kalrez®
Kalrez® o-rings are resistant to over 1,800 different harsh chemicals while retaining superior stability at high temperatures. As the world’s largest Kalrez® and FFKM o-ring inventory network, Marco Rubber stocks a wide range of Kalrez® FFKM o-ring material.
Markez®
Markez® o-rings provide unrivaled value in harsh applications – made with nearly identical ingredients as the highest priced brands. Designed to be a low-cost Kalrez® alternative with comparable performance for specific applications, Markez® o-rings may lead to substantial savings if your application is a good fit.
Chemraz®
Chemraz® o-rings have high heat, chemical and solvent resistance like many FFKM o-rings. It’s defining properties, however, are exceptional resistance to steam and performance in low-temperature environments, as well as availability
Parofluor®
Marco Rubber carries Parofluor® o-rings from Parker Seals which may offer great value for your application. Parofluor® o-rings are specially formulated for dozens of different environments and feature high temperature and chemical resistance.
Simriz®
Simriz® o-rings from Marco Rubber excel in aggressive environments like dry process chemistries and reactive plasmas. Like most FFKM o-rings, Simriz® o-rings offer excellent heat resistance, but many Simriz® materials also provide great low temperature performance and amine resistance too.
FFKM Compatibility and Order Online FFKM O-rings In Stock Extreme Chemical and Temperature Resistance
Higher temperature resistance, excellent steam resistance, low compression set, low permeability and very low outgassing. Compare to Kalrez® 4079 and 7075
USP Class VI, FDA & 3-A compliant, high temperature white material providing the best all around compatibility, compare to Kalrez® 6221 and Chemraz® 625
Higher durometer general purpose, provides the lowest cost for larger size seals used in oilfield and gas exploration, compare to Kalrez® 3018 and Chemraz® 510
Higher performance AED explosive decompression resistance, tested to Norsok & Nace TM0297 standard, resistance to methanol, sour gas and steam, compare to Kalrez® 0090
Higher temperature resistance Norsok M710 AED explosive decompression resistance, excellent resistance to Sour gas and associated chemicals and steam, compare to Kalrez® 7090
Lower temperature resistance, AED explosive decompression resistance, providing the best overall temp range and Chemical resistance, compare to Kalrez® 0040
Improved plasma resistance higher purity higher temperature resistance, very low compression set over time. compare to Kalrez® 9100, 9500 and Chemraz® DXZ
Higher purity amber tinted clear, same as Markez® Z1407 but lower durometer for lower compression force for delicate applications, compare to Kalrez® 8002
SZ481 is a 70-durometer, black, low-compression set, high-strength perfluoroelastomer. The operating temperature range is from -10ºC to 230ºC (-14ºF to 446ºF). Typical application environments are aggressive acids, bases and solvents. Z1001 is also suited for many non-oxidizing dry process chemistries. Z1001 can be used in place of Kalrez® compound 6375 when temperature are below 230ºC.
SZ484 is a FDA compliant, 75-durometer, black, low-compression set, high-strength perfluoroelastomer. The operating temperature range is from -10ºC to 230ºC (-14ºF to 446ºF). Typical application environments are aggressive acids and bases.
SZ485 is a 75-durometer, black, low-compression set, high-strength perfluoroelastomer. The operating temperature range is from -10ºC to 230ºC (-14ºF to 446ºF). Typical application environments are aggressive acids, bases, solvents, and steam. Z1005 is also suited for many non-oxidizing dry process chemistries. Z1005 can be used in place of Kalrez® compound 6375 when temperature are below 230ºC.
SZ486 is A 80 -durometer, white low-compression set, high strength perfluoroelastomer. The operating temperature range is from -10C to 230C (-14F to 446F). Typical application environments for Z1006 seals are aggressive dry process chemistries, including reactive plasmas.
SZ487 is a 75-durometer, black, high temperature perfluoroelastomer. The operating temperature range is from -10ºC to 310ºC (-14ºF to 615ºF). Typical application environments are aggressive acids, bases and solvents. Z1007 can be used in place of Kalrez® compound 4079. Used in dry, high heat below 310C.
SZ488 is a 70-durometer, ivory, high temperature perfluoroelastomer. The operating temperature range is from -10ºC to 300ºC (-14ºF to 572ºF). Typical application environments for Z1008 seals are aggressive dry process chemistries, including reactive plasmas.
SZ489 is a 65-durometer, clear, clean perfluoroelastomer. The operating temperature range is from -10C to 260C (-14F to 500F). Typical application environments for Z1009 seals are aggressive dry process chemistries, including reactive plasmas, as well as aggressive acids, bases and solvents.
A field proven universal compound having a broader range of chemical resistance than any other single compound on the market. Chemraz 505 is the elastomer of choice used to seal better than 90% of the most demanding services found in the chemical process and refining industries.
The highest temperature perfluoroelastomer on the market. Chemraz 615 can handle continuous operating temperatures up to 615ºF with outstanding resistance to fatal thermal related compression set.
A high temperature compound with superior physical properties and chemical resistance comparable to Chemraz 505. This compound excels in demanding dynamic applications and exhibits unparalleled performance in high temperature steam and water. Chemraz 605: Recently received USP Class VI Certification
This specialty black compound was formulated for incredible resistance to explosive decompression damage common in high pressure gas services. Chemraz 526 is also used in monomer services where polymerization attacks and ruptures common elastomeric seals.
This specialty cream Chermaz compounds are formulated to withstand the most demanding chemical process applications. Chemraz 584 and 585 are the elastomers of choice for strong oxidation fluids and hot aqueous solutions.
This specialty cream Chermaz compounds are formulated to withstand the most demanding chemical process applications. Chemraz 584 and 585 are the elastomers of choice for strong oxidatio and hot aqueous fluids.
The white industrial compounds are for applications where contamination from carbon black must be prevented. Not for use in acids, aldehides, ethylene oxide, or propylene oxide.
The white industrial compounds are for applications where contamination from carbon black must be prevented. Not for use in acids, aldehides, ethylene oxide, or propylene oxide.
Kalrez® FFKM O-Rings Typical Physical Properties*
KALREZ® COMPOUND
MAXIMUM APPLICATION TEMP, °C (°F)
DUROMETER HARDNESS, SHORE A, POINTS ±5 ( ASTM D2240 )
A carbon black-filled product for general use in O-rings, seals, diaphragms and other parts specifically for the chemical process industry. This product has excellent broad chemical resistance, good mechanical properties, and outstanding hot-air aging properties. Kalrez® Spectrum™ 6375 is well suited for use in mixed process streams because of its excellent resistance to acids, bases, and amines. It is also recommended for use in hot water, steam, pure ethylene oxide and propylene oxide.
Enhanced physical properties including very low compression set and improved seal force retention. It is a carbon black-filled product utilizing proprietary cure chemistry. Its mechanical properties are designed for improved sealing performance in both high temperature environments and temperature cycling situations. Kalrez® Spectrum™ 7075 O-rings have a glossy finish. This product was specifically developed for the chemical and hydrocarbon industries to provide improved chemical and thermal resistance better than the industry standard set by Kalrez® 4079.
A low compression set product for general-purpose use in O-rings, diaphragms, seals, and other parts used in the process and aircraft industries. It is a carbon black-filled product with excellent chemical resistance, good mechanical properties, and outstanding hot air aging properties. It exhibits low swell in organic and inorganic acids and has good response to temperature cycling effects. This product is not recommended for use in hot water/steam applications or in contact with certain hot aliphatic amines, ethylene oxide, or propylene oxide.
A non-black product specifically developed for chemical processes involving hot, aggressive amines. It has also been successfully used in applications involving highly oxidizing chemicals. In addition, it has excellent overall chemical resistance. This cream colored product is easily identifiable when selecting an O-ring material for harsh chemical plant services.
A product for uses requiring higher hardness/higher modulus than more typical applications. Kalrez® Spectrum™ 7090 perfluoroelastomer parts are well suited for both static and dynamic applications as well as specific sealing applications requiring extrusion resistance at high temperatures. These specialty black parts have excellent thermal and mechanical properties, including excellent compression set and seal force retention, resistance to temperature cycling effects, and rapid gas decompression (RGD). Short excursions to higher temperatures may also be possible.
A black product with broad chemical resistance combined with high modulus and high hardness. Kalrez® 0090 parts have outstanding resistance to extrusion and rapid gas decompression (RGD). This product has been independently tested and certified by the Materials Engineering Research Laboratory (MERL – UK) to meet NORSOK-M-710 Rev 2 requirements.
A black product specifically designed for low temperature environments where significant chemical resistance is required. Kalrez® Spectrum™ 0040 parts maintain elasticity and seal force at temperatures unattainable by other perfluoroelastomers.
A carbon black-filled product for O-rings, seals, and other parts used in chemical process industries. It has good hot water/steam, and excellent amine resistance. Kalrez® 1050LF is not recommended for use in organic acids, or inorganic acids at high temperatures.
Don't see what you need? Please contact an FFKM o-ring application engineer for assistance in selecting the compound that provides the best combination of performance and price for your specific application.
