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FFKM O-Rings- Perfluoroelastomers
By the 1960s, there was a growing need for a polymer that was more chemically resistant and possessed higher temperature capabilities. Perfluoroelastomers were the natural conclusion, combining the chemical resistance of PTFE with the flexibility and elasticity of regular FKMs. Originally, this next phase of elastomer technology was almost exclusively the preserve of space programmes and chemical processes. However, FFKM was soon embraced by the wider industrial community, once its beneficial properties became known.
Nowadays, FFKM is a regular fixture in the aerospace and automotive industries, amongst many others. Although the polymer structure has remained largely unchanged since the introduction of perfluoroelastomers, the polymerisation process has undergone a process of refinement over the decades and FFKM materials can be developed as part of a safer, greener production process.
Advantages of FFKM O-Rings
| 1 | Wide temperature range (-45°C - 270°C). |
| 2 | Excellent chemical resistance (best in class, similar to PTFE). |
| 3 | Excellent gas and liquid permeation resistance. |
| 4 | Excellent weather ability and ozone resistance. |
| 5 | Self-extinguishing and non-flammable in air |
| 6 | High Density. |
| 7 | Good mechanical properties, improving sealing performance. |
| 8 | Suitable for explosive decompression, CIP, SIP and FDA. |
Disadvantages of FFKM O-Rings
| 1 | Can swell significantly in fluorinated solvents. |
| 2 | Should not be used with molten or gaseous alkali metals. |
| 3 | Thermal coefficient larger than other elastomers, so seal housing size may need modifying. |
| 4 | High cost, so generally used when no other elastomer is appropriate. |
FFKM O-Rings vs FKM O-Rings
What is the difference between FFKM O-Rings and FKM O-Rings? FFKM O-Rings offer a greater degree of versatility than FKM O-Rings. It has higher chemical resistance and can withstand a wider range of operating temperatures up to 330°C. Therefore, if your application requires the highest level of performance, then in theory FFKM may be the best choice of sealing material.
However, if budget is a decisive factor in your decision-making process, then we are likely to point you in the direction of FKM O-Rings. If you're less demanding about chemical and temperature resistance, FKM O-Rings can provide many of the same benefits as FFKM O-Rings - just at a slightly lower cost. It is still more resistant to chemicals, weather, ozone, gases and liquids than most other elastomers. Like FFKM O-Rings, FKM O-Rings are also suitable for explosive decompression, CIP, SIP and FDA applications.
Lanhe Seals and O-Rings are the original manufacturer of rubber sealing products,O-Ring kit,oil seals, and other related industries in China. Fast and reliable service and cost control are the advantages of Lanhe seals .With an inventory of more than one million standard Metric O-Rings&Seals ring,Lip Seals and sealing accessories, we offer one of the most comprehensive, easily accessible product portfolios in the industry.In addition to our standard seals, we also offer custom molded O-ring, hydraulic pump seals, piston & rod seals,pneumatic seals,also Shock absorber oil seals for automotive use, valve stem oil seals, power steering and Engine seals etc.
Any customized rubber seals can be delivered accurately and quickly. We deliver to more than 70 countries worldwide, and have the advantage of being a global material supplier, unmatched quality, excellent customers, we are ISO 9001 and IATF16949 certified and meet customer all needs.
Lanhe Seals has 20 years of experience in the rubber seals industry focused on providing a broad and growing product supply for the automotive, medical devices, telecommunications, and sanitary industries, built on a history of expertise, exceptional customer service and innovation.
Q1:Are you a manufacturer or trading company?
A1: We are a factory with more than 20 years' experience.
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