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.
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Rubber Products
FKM Rubber Parts
This is FKM outside the sealing catalogue: custom moulded fluoroelastomer parts made to a customer drawing. We provide FKM rubber product processing to order and have our own mould workshop, so the tool for your part is designed and manufactured here rather than subcontracted to a shop that will never run it.
Why It Wins
Key Benefits
- Custom FKM parts moulded to your drawing rather than adapted from a catalogue
- Exceptional resistance to a wide range of chemicals oils and fuels
- Structural integrity retained where temperatures are elevated
- Mould design and manufacture in our own workshop
- Resistance to wear tear and environmental degradation in service
The Brief
Problems It Solves
- Custom parts refused by suppliers because the volume is small
- Components degrading in aggressive acids or industrial lubricants
- Tooling quoted by a shop that will never run it and never sees the moulding problems
- Parts losing structural integrity at elevated temperature
Audience
Who It Is For
- Equipment builders needing a non catalogue fluoroelastomer part
- Process engineers replacing a part that fails on chemical attack
- Design teams moving a demanding part from prototype into tooled production
- Buyers who need the tool and the part from one supplier
In Service
Application Scenarios
- Chemical handling equipment components
- High temperature machinery parts
- Automotive components exposed to fuel and industrial lubricants
- Equipment exposed to aggressive acids or industrial lubricants
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 | FKM fluoroelastomer |
|---|---|
| Form | Custom moulded parts to customer drawing |
| Key Properties | Chemical resistance, high temperature stability, wear resistance |
| Tooling | Designed and manufactured in our own mould workshop |
| Country of Manufacture | China |
Materials
- FKM
Manufacturing Process
- Structure review
- Mould design
- Mould manufacture
- Moulding
- Post cure
- Inspection
Detail
Technical Features
- FKM fluoroelastomer compound
- Resistance to chemicals oils and fuels including aggressive acids
- Structural integrity at elevated temperature
- Custom geometry with tooling produced in house
How We Check
Quality Control
- Drawing or sample reviewed by our structural design team before tooling
- First article moulded from the production tool for approval
- Production checked against the approved first article
- Cure and process owned by our rubber process engineers
Made to Order
Customisation Options
- Any geometry designed to drawing or reverse engineered from a sample
- Hardness and formulation adjusted to the service conditions
- Tool retained here or shipped to you as agreed
- Supplied with FKM seals from the same programme
Honest Comparison
Where This Is the Right Choice and Where It Is Not
Compared With NBR parts
Nitrile is cheaper and adequate for ordinary oil contact. FKM earns its cost when chemistry or temperature exceeds that.
Compared With FFKM parts
FFKM extends chemical range further at considerably higher cost, and is rarely necessary outside semiconductor and severe chemical service.
Compared With Silicone parts
Silicone leads on temperature range and flexibility, FKM on chemical and fuel resistance.
Use Guide
How to Specify and Order This Part
Send a drawing or a sample with overall dimensions
List the chemicals the part will contact and the temperature range
State the annual quantity so the right moulding process is chosen
Agree tool ownership before tooling starts
Approve the first article physically rather than from photographs
Related Products
Rubber Products
Rubber Moulds
We have our own mould manufacturing workshop and experienced structural design engineers, so we can independently design and develop rubber moulds rather than pass the work on.
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Rubber Seals
FFKM Material Seals
Not every FFKM application is an O-ring.
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Rubber Products
SBR Rubber Parts and Counterweight Blocks
SBR is the compound to reach for when abrasion resistance and cost matter more than chemical range.
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
Compression Transfer and Injection Moulding for Rubber Parts
The moulding process decides tooling cost, cycle time and how much detail a part can carry. Choosing it is a commercial decision as much as a technical one.
Read the guide →Answers
FKM Rubber Parts Questions
Can you make a part from my drawing rather than a catalogue item?
Yes. Custom FKM rubber product processing to customer drawings is exactly what this line is.
Do you make the mould yourselves?
Yes, we have our own mould workshop and design and manufacture the tool in house.
What if I only have a sample?
Our structural design team can work from the physical part and produce a drawing for your approval.
What is the minimum quantity?
It depends on the tool and the part. We will tell you at quotation rather than publish a figure that may not apply.
Can I keep the mould?
Yes, if agreed in writing before we start.
How fast is a quotation?
One working day once we have the drawing, conditions and quantity.
Quote FKM Rubber Parts
Send the size or drawing, the working conditions and the quantity. One working day for a considered reply.