Rubber Seals
FFKM Material Seals
Not every FFKM application is an O-ring.
View product →
Rubber Seals
FFKM O-Rings
FFKM O-rings exist for the applications where every other elastomer has already been ruled out. Their resistance covers a vast range of aggressive chemicals, solvents and corrosive agents, and they hold sealing integrity under extreme temperatures and thermal cycling. They cost considerably more than FKM, which is why we will tell you when FKM is enough.
Product Photographs
Every image on this page is a photograph of parts we have produced.
Why It Wins
Key Benefits
- Resistance across aggressive chemicals solvents and corrosive agents
- Sealing integrity maintained under extreme and fluctuating temperatures
- Long service life that reduces the frequency of planned seal replacement
- Available in AS568 sizes and in custom cross sections tooled in house
- Small qualification quantities quoted rather than refused
The Brief
Problems It Solves
- Seals attacked by chemistry that defeats ordinary fluoroelastomer
- Contamination of a process batch when a seal degrades inside the chamber
- Short replacement intervals driving unplanned downtime
- Suppliers unwilling to quote modest quantities of a high specification compound
Audience
Who It Is For
- Semiconductor fab maintenance and equipment engineers
- Chemical and petrochemical process engineers
- Battery and laser plating equipment builders
- Laboratory and biotechnology equipment manufacturers
In Service
Application Scenarios
- Semiconductor manufacturing equipment
- Petrochemical processing and chemical transfer systems
- Aerospace applications
- Biotechnology processes where purity and contamination control matter
- Fuel systems and high temperature engine components
- Laser plating and battery manufacturing equipment
Specification
What You Are Actually Buying
Only values our own records support appear here. Anything we cannot evidence is left out rather than estimated.
| Material | FFKM perfluoroelastomer |
|---|---|
| Chemical Resistance | Aggressive chemicals, solvents and corrosive agents |
| Thermal Behaviour | Maintains sealing integrity under extreme temperature fluctuation |
| Typical Industries | Semiconductor, petrochemical, aerospace, biotechnology, automotive, battery, laser plating |
| Sizes | AS568 series and custom cross sections |
| Country of Manufacture | China |
Materials
- FFKM
Manufacturing Process
- Compound selection
- Mould selection or tooling
- Moulding
- Post cure
- Inspection
- Packing
Detail
Technical Features
- Perfluoroelastomer compound with near universal chemical resistance
- Retains integrity through high thermal fluctuation
- Precision moulded cross sections
- AS568 sizes from existing moulds and custom sizes tooled to drawing
How We Check
Quality Control
- Application chemistry reviewed before the compound is confirmed
- First article approved before series supply
- Dimensional check against the approved sample
- Same formulation reused on repeat orders
Made to Order
Customisation Options
- Any AS568 dash number in FFKM
- Custom cross sections tooled in our own mould workshop
- Pilot quantities for qualification testing
- Supplied alongside FKM equivalents for comparison
Honest Comparison
Where This Is the Right Choice and Where It Is Not
Compared With FKM
FKM covers most demanding industrial fluids at a fraction of the cost. FFKM is for chemistry that defeats FKM or where failure contaminates the process.
Compared With PTFE seals
PTFE brings chemical resistance without elastomeric recovery. FFKM keeps the sealing behaviour of rubber alongside the chemical range.
Compared With Frequent NBR replacement
Where replacement means opening a process chamber, a longer lasting seal is cheaper than a cheaper seal.
Use Guide
How to Specify and Order This Part
List every chemical the seal contacts including cleaning cycles
Give the full thermal cycle rather than a single operating temperature
Qualify with a pilot quantity before committing to a full programme
Record achieved service life to justify the specification internally
Use an AS568 dash number where the hardware permits
Related Products
Rubber Seals
FKM and FFKM O-Rings
FKM and FFKM sit at the top of the seal material range and are frequently confused with each other.
View product →
Rubber Seals
AS568 O-Ring Series
We possess all the moulds for the AS568 O-ring size range, which lets us supply standard parts of the series promptly and without a tooling step.
View product →
Rubber Seals
O-Rings
An O-ring is the cheapest part in most assemblies and the most common cause of a warranty return.
View product →Related Guides and Industries
Guide
FFKM or FKM Which One Your Application Actually Needs
FFKM is not simply a better FKM. It is a different commercial decision, and specifying it by reflex wastes money as reliably as under specifying wastes uptime.
Read the guide →Guide
The AS568 O-Ring Size Standard and Why It Saves You Tooling
AS568 is the reason some O-ring quotations come back with no tooling charge and a short lead time, and others do not.
Read the guide →Answers
FFKM O-Rings Questions
Is FFKM worth the cost over FKM?
Only when the chemistry defeats FKM or when a seal failure contaminates a batch or stops a plant. We will say which way we read your application.
Which industries do you supply FFKM to?
Semiconductor, pharmaceutical, chemical, petroleum, automotive, laser plating, battery manufacturing and special equipment production.
Do you accept small orders?
Yes. Small quantities are normal for qualification work in these sectors.
Can you make a non standard FFKM cross section?
Yes, tooled in our own mould workshop.
What do you need to quote?
The chemistry, the temperature cycle, the size or drawing and the quantity.
How fast do you respond?
Within one working day.
Quote FFKM O-Rings
Send the size or drawing, the working conditions and the quantity. One working day for a considered reply.