Product Overview
Reliable custom rubber parts for industrial applications
Quick Answer
High-temperature EGR valve flange seals are molded profile gaskets for compatible exhaust gas recirculation interfaces. Available structures include D-rings, square-cut seals, multi-lip profiles and ribbed frames with locating tabs. FKM, HNBR, VMQ and FVMQ compounds, custom dimensions, bolt-hole patterns, hardness levels and tolerances are available according to the application drawing.
High-temperature EGR valve flange seals are molded elastomer gaskets for compatible interfaces within exhaust gas recirculation systems. They help control leakage around EGR valve housings, intake-side ports, cooler-side connections and adapter flanges. Available materials include FKM, HNBR, VMQ and FVMQ. Profile geometry, bolt-hole pattern, locating tabs, hardness and dimensional tolerance can be customized according to the application drawing.
Product Overview
The EGR valve flange seal is a high-temperature molded gasket used at compatible connection points within an exhaust gas recirculation assembly. Depending on the engine architecture, the seal can be installed between an EGR valve body, intake manifold, cylinder-head port, cooler-side housing or adapter plate. It maintains controlled sealing contact under flange compression, thermal cycling and exposure to condensate, carbon deposits, oil mist and combustion by-products. Available structures include D-ring profiles, square-cut seals, multi-lip gaskets and custom ribbed frames with locating tabs. Material selection must be based on the actual interface temperature, media exposure, groove geometry and compression requirement.
Key Features
- Designed for compatible EGR valve housings, intake-side ports, cooler-side connections and adapter flanges.
- Helps reduce leakage and unintended gas bypass around the EGR sealing interface.
- Available as D-ring, square-cut, multi-lip and custom ribbed-frame profiles.
- Optional locating tabs and retention pegs help maintain gasket position during assembly.
- Profile geometry can compensate for controlled flange movement during thermal cycling.
- Critical sealing surfaces can be manufactured with defined flash-control requirements.
- FKM, HNBR, VMQ and FVMQ compounds can be reviewed according to temperature and media exposure.
- Custom dimensions, Shore A hardness, packaging and inspection requirements are available upon request.
Product Specifications
| Specification | Details |
|---|---|
| Product Name | High-Temperature EGR Valve Flange Seal |
| Also Known As | EGR gasket, EGR flange O-ring, exhaust gas recirculation port seal or molded EGR profile gasket |
| Material | FKM, HNBR, VMQ or FVMQ. Material selection depends on the interface temperature and media exposure. |
| Hardness | Available according to compound and sealing-profile requirements |
| Color | Black, green or application-specific color, depending on the selected compound |
| Manufacturing Process | Compression molding or injection molding, depending on the gasket structure |
| Profile Options | D-ring, square-cut profile, multi-lip gasket, ribbed frame or custom molded shape |
| Flange Options | Custom profiles for 2-bolt, 3-bolt, 4-bolt and application-specific flange interfaces |
| Assembly Features | Optional locating tabs, retention pegs, alignment features and groove-fit structures |
| Application | Compatible sealing interfaces within automotive and industrial EGR systems |
| Customization | Overall dimensions, thickness, cross-section, flow-passage geometry, bolt-hole pattern, grooves, locating tabs, sealing lips, rubber compound, Shore A hardness, dimensional tolerance, flash-control requirement, packaging and inspection requirements can be reviewed according to the drawing. |
| MOQ | Contact us for details |
| Tooling | Tooling cost depends on the drawing and product structure |
| Sample Availability | Available upon request |
| Lead Time | Available upon request |
| Compliance Options | ASTM D2000, SAE J200, RoHS and REACH requirements can be reviewed according to the selected compound. Documentation is available upon request. |
Profile Selection Guide
| Profile Type | Typical Characteristics | Recommended Use |
|---|---|---|
| D-Ring Profile | Flat contact face with controlled compression behavior | Grooved EGR housings requiring stable face sealing and defined installation orientation |
| Square-Cut Profile | Broad sealing surface and simple cross-section | Flat flange interfaces and application-specific retaining grooves |
| Multi-Lip Profile | Multiple localized sealing lines across the flange interface | Applications requiring controlled sealing contact under limited flange compression |
| Custom Ribbed Frame | Application-specific perimeter geometry with ribs, tabs and bolt-hole features | Complex EGR housings, adapter plates and high-volume assembly programs |
Material Selection Guide
| Rubber Material | Typical Shore A Hardness | Temperature Capability | Key Characteristics | Recommended Applications |
|---|---|---|---|---|
| FKM | 70–80 Shore A | Compound-specific; high-temperature grades can be reviewed up to +230°C | Heat resistance and compatibility with oil mist, fuel vapor, soot deposits and demanding chemical exposure | High-temperature EGR valve interfaces, turbocharged diesel engines and heavy-duty applications |
| HNBR | 70–75 Shore A | Compound-specific; grades can be reviewed up to +150°C | Mechanical strength, tear resistance and compatibility with oil-containing condensates | Cooled EGR systems, cooler-side connections and lower-temperature EGR interfaces |
| VMQ Silicone | 50–70 Shore A | Compound-specific; high-temperature grades can be reviewed up to +250°C | Thermal stability and flexibility across a broad temperature range | High-temperature applications where the groove geometry supports the mechanical properties of silicone |
| FVMQ Fluorosilicone | 60–70 Shore A | Compound-specific; grades can be reviewed from -60°C to +175°C | Low-temperature flexibility with improved resistance to fuel vapor and oil-containing media | Cold-climate platforms and specialized EGR or intake-system interfaces |
Applications
High-temperature EGR valve flange seals can be used at compatible connection points within passenger-vehicle, commercial-vehicle and industrial-engine exhaust gas recirculation systems. Typical interfaces include EGR valve bodies, intake-manifold ports, cylinder-head connections, EGR cooler outlets and adapter flanges. The gasket helps maintain sealing contact under repeated heating and cooling cycles while reducing leakage around the flange connection. The final seal must be selected according to the actual gas temperature, condensate composition, oil-mist exposure, bolt pattern, groove geometry and compression target. Interfaces exposed to temperatures beyond the selected elastomer limit may require a different gasket material system.
Customization Options
Custom EGR valve flange seals can be developed according to 2D drawings, 3D STEP models, OEM part numbers or physical samples. Buyers can specify the flange outline, flow-passage geometry, thickness, cross-section, groove fit, sealing lips, locating tabs, retention pegs, bolt-hole pattern, compound, Shore A hardness and dimensional tolerance. Flash-control requirements should be identified for critical sealing surfaces. Please provide the installation position, gas temperature, condensate exposure, pressure conditions, annual volume, prototype quantity and packaging method. Tooling cost depends on the drawing and product structure.
What Information Should Buyers Provide for a Quote?
- 2D drawing, 3D model, OEM part number or physical sample
- EGR valve model and engine application
- Installation position within the EGR system
- Overall gasket dimensions and tolerances
- Flow-passage geometry
- Thickness and cross-section
- Bolt-hole diameter and hole pattern
- Groove width and groove depth
- Locating-tab or retention-peg requirements
- Rubber material
- Shore A hardness
- Continuous and peak operating temperature
- Pressure or vacuum conditions
- Exhaust condensate, soot, oil-mist and fuel-vapor exposure
- Required quantity
- Estimated annual volume
- Compliance requirements
- Packaging requirements
FAQ
What is an EGR valve flange seal used for?
An EGR valve flange seal is installed at a compatible connection point within the exhaust gas recirculation system. It helps maintain a controlled seal between mating components such as an EGR valve body, intake manifold, cylinder-head port, cooler-side housing or adapter flange.
What can happen if an EGR valve flange seal fails?
A degraded or incorrectly installed seal can allow leakage around the EGR interface. Possible symptoms include soot deposits around the flange, exhaust odor, unstable engine operation, EGR flow-deviation fault codes and reduced emissions-system performance. The complete EGR assembly should be inspected to confirm the root cause.
How should buyers select FKM, HNBR, VMQ or FVMQ?
FKM can be reviewed for demanding high-temperature and chemical exposure. HNBR is suitable for cooler-side EGR interfaces requiring mechanical strength. VMQ can be evaluated for elevated-temperature applications where the groove design supports silicone. FVMQ can be considered when low-temperature flexibility and fuel-vapor resistance are both relevant.
Can an elastomer EGR seal be used directly in the hottest exhaust-gas path?
Suitability depends on the actual interface temperature, pressure and media exposure. Molded elastomer seals should only be used within the validated temperature range of the selected compound. Interfaces exposed to temperatures above the elastomer limit may require a metal gasket or another high-temperature sealing system.
Why are locating tabs and retention pegs useful?
Locating tabs and retention pegs help keep the gasket seated in the groove during handling and assembly. These features can reduce the risk of misalignment, displacement or pinching when the EGR valve or adapter flange is installed and the bolts are tightened.
Are samples and automotive project documentation available?
Prototype samples are available upon request. PPAP Level 3 documentation, dimensional inspection reports, material documentation and applicable compliance reports can be reviewed according to the project requirements. Please submit the drawing, compound requirement, prototype quantity and annual volume for evaluation.
Request a Custom Quote
Send your EGR valve drawing, mating-flange drawing, 3D STEP model, OEM part number or physical sample for technical review. Please include the installation position, gas temperature, flow-passage geometry, bolt-hole pattern, groove dimensions, compound preference, prototype quantity, estimated annual demand and packaging requirements.
