DIN3869 FKM Profile Sealing Ring
DIN3869 FKM profile sealing ring is a precision sealing component designed for reliable sealing performance in hydraulic, pneumatic, and mechanical connection systems. The DIN3869 FKM profile sealing ring is manufactured from fluorocarbon rubber (FKM), providing excellent resistance to high temperatures, oils, fuels, chemicals, and demanding industrial environments.
The DIN3869 FKM profile sealing ring features a specially designed profile structure that improves sealing contact and positioning stability in grooves and threaded connection systems. It is widely used in hydraulic fittings, valves, machinery, automotive systems, and industrial equipment where durable sealing performance is required.

Product Overview
The DIN3869 FKM profile sealing ring is engineered for static sealing applications where reliable fluid retention and resistance to harsh media are required. Its profile geometry allows better positioning within sealing grooves compared with standard round sealing rings.
FKM material provides outstanding resistance to mineral oils, fuels, lubricants, and many chemical substances. The DIN3869 FKM profile sealing ring maintains sealing performance under elevated temperatures and long-term operating conditions.
Compared with general rubber sealing rings, this profile sealing ring offers improved dimensional stability, lower aging risk, and better compatibility with demanding industrial applications.
Product Specifications
| Item | Description |
|---|---|
| Standard | DIN3869 |
| Product Name | FKM Profile Sealing Ring |
| Material | Fluorocarbon Rubber (FKM) |
| Seal Type | Profile Rubber Sealing Ring |
| Structure | Special Profile Cross Section |
| Color | Brown / Green / Customized |
| Hardness | Customized According to Requirement |
| Size Range | According to DIN3869 Standard |
| Application Type | Static Sealing |
| Temperature Range | According to FKM Grade |
| Packaging | Bulk / Bag / OEM Packaging |
| Customization | Size, hardness, compound available |
Technical Parameters
| Parameter | Value |
|---|---|
| Material | FKM Fluorocarbon Rubber |
| Hardness | According to Rubber Grade |
| Temperature Resistance | Excellent |
| Oil Resistance | Excellent |
| Fuel Resistance | Excellent |
| Chemical Resistance | Excellent |
| Compression Set Resistance | Good |
| Aging Resistance | Excellent |
| Manufacturing Standard | DIN3869 |
Materials and Manufacturing Process
The DIN3869 FKM profile sealing ring is manufactured through precision rubber molding and inspection processes to ensure accurate profile dimensions and stable sealing performance.
- Raw material selection: High-quality FKM fluorocarbon rubber compound
- Rubber mixing: Uniform blending of polymer materials and additives
- Mold design: Precision tooling according to DIN3869 profile requirements
- Compression molding: Formation of accurate sealing geometry
- Vulcanization: Improves elasticity, strength, and durability
- Surface finishing: Removes flash and improves sealing contact quality
- Inspection: Dimensional, hardness, and appearance testing
- Packaging: Clean protective packaging for industrial use
Each DIN3869 FKM profile sealing ring is produced under strict quality control to ensure reliable sealing performance.
Applications of the Product
The DIN3869 FKM profile sealing ring is widely used in industries requiring high-performance sealing:
- Hydraulic systems: Hydraulic fittings and fluid connections
- Pneumatic equipment: Sealing applications in control systems
- Automotive industry: Fuel, oil, and mechanical systems
- Industrial machinery: Valves, pumps, and equipment assemblies
- Chemical equipment: Resistant sealing applications
- Construction machinery: Hydraulic components and connectors
- Energy equipment: High-temperature sealing systems
- Manufacturing systems: Precision fluid control assemblies
Its FKM material and profile structure make it suitable for applications requiring stable sealing under demanding conditions.
Why Choose This Product
- Premium FKM fluorocarbon rubber material
- Excellent resistance to oil, fuel, and chemicals
- Stable performance at elevated temperatures
- Profile design improves groove positioning
- Reliable sealing under long-term operation
- Good compression resistance
- Suitable for demanding industrial environments
- Customized sizes and compounds available
- OEM support available
The DIN3869 FKM profile sealing ring provides a reliable sealing solution for hydraulic and industrial connection systems.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and customized sealing solutions.
- Experience with precision rubber sealing products
- Support for FKM and special elastomer materials
- Advanced molding and inspection capability
- OEM/ODM customization support
- Stable production capacity for industrial supply
- Strict quality inspection procedures
- Global export experience
- Engineering support for sealing applications
Flybear provides reliable sealing and fastening products for hydraulic, automotive, machinery, and industrial customers worldwide.
Quality Inspection and Control
Quality assurance is maintained throughout production:
- FKM compound verification
- Raw material inspection
- Hardness testing
- Dimensional accuracy inspection
- Profile geometry inspection
- Compression performance testing
- Surface appearance inspection
- Packaging quality verification
All manufacturing processes follow ISO-based quality management systems to ensure consistent product reliability.
Selection Guide
When selecting a DIN3869 FKM profile sealing ring, consider:
- Groove dimensions
- Operating temperature
- Fluid or chemical compatibility
- Pressure requirements
- Static sealing conditions
- Required hardness and material grade
Correct selection ensures reliable sealing performance and extends equipment service life.
FAQ
1. What is DIN3869 FKM profile sealing ring used for?
It is used for sealing hydraulic, pneumatic, and mechanical connections requiring high-performance rubber materials.
2. Why choose FKM material for sealing rings?
FKM provides excellent resistance to heat, oils, fuels, and many chemicals.
3. What is the advantage of a profile sealing ring?
The special profile improves positioning stability and sealing contact within grooves.
4. Can DIN3869 FKM sealing rings be customized?
Yes, Flybear supports customized sizes, hardness levels, rubber compounds, and packaging.
5. Are FKM profile sealing rings suitable for hydraulic applications?
Yes, they are commonly used in hydraulic systems requiring reliable oil and temperature resistance.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
Contact us for quotation, customization, and technical support via Contact Us.




