Product Overview
Reliable custom rubber parts for industrial applications
Quick Answer
This DN50 EPDM full-face flange gasket is designed for static sealing between compatible pipe, valve, pump and equipment flange faces. It covers the full flange contact area and includes bolt-hole positions according to the flange standard or drawing. Thickness, hardness, OD, ID, bolt-hole pattern, tolerance and packaging can be customized.
This DN50 EPDM full-face flange gasket is a flat rubber sealing component designed for compatible DN50 pipe flange connections. It covers the full flange face and includes bolt-hole positions according to the mating flange design. EPDM material is suitable for water, outdoor, HVAC and weather-exposed applications where oil or fuel contact is not present.
Product Overview
The DN50 EPDM full-face flange gasket is installed between two compatible pipe, valve, pump or equipment flanges to create a static sealing interface. A full-face gasket extends across the flange contact surface and includes bolt holes, helping align the gasket during assembly and distribute compression across the flange face. EPDM is commonly selected for water, hot water, weather, ozone and outdoor exposure, but material suitability should be confirmed against the actual media and temperature. The final gasket dimensions depend on the applicable flange standard, pressure class, bolt-hole pattern and required thickness. Buyers should provide the flange standard, drawing or physical sample before production.
Key Features
- DN50 nominal size for compatible pipe flange connections.
- Full-face gasket structure with bolt holes aligned to the mating flange.
- EPDM rubber material for water, HVAC, outdoor and weather-exposed applications.
- Designed for static sealing between pipe, valve, pump and equipment flange faces.
- Thickness, bolt-hole pattern and dimensional tolerance can be customized.
- Suitable for die-cut or water-jet-cut production depending on quantity and tolerance.
- Shore A hardness can be selected according to flange compression requirements.
- Samples, inspection requirements and packaging options are available upon request.
Dimensional Specification — DN50 Flange Standards
EN 1092-1 / DIN 2690 (European Standard)
| Parameter | Dimension |
|---|---|
| Nominal Bore | DN50 |
| Gasket Inner Diameter (ID) | 53 mm |
| Gasket Outer Diameter (OD) | 125 mm |
| Bolt Hole Diameter | 19 mm |
| Bolt Circle Diameter (BCD) | 102 mm |
| Number of Bolt Holes | 4 |
| Standard Thickness | 3.0 mm |
| Pressure Class | PN6 / PN10 / PN16 |
Product Specifications
| Attribute | Value |
|---|---|
| Part Name | DN50 EPDM Full-Face Flange Gasket |
| Also Known As | DN50 Flange Seal / 2″ Full Face Rubber Gasket / Butterfly Valve Flange Gasket / Moulded Pipe Flange Gasket |
| Nominal Bore | DN50 (2 inch NPS) |
| Gasket Type | Full-Face (FF) — bolt holes through gasket body |
| Number of Bolt Holes | 4 |
| Special Features | Dual integrated sealing beads (concentric raised ridges); anti-rotation location lug |
| Material | EPDM (Ethylene Propylene Diene Monomer) |
| Color | Black (carbon-black reinforced EPDM) |
| Hardness | Shore A 55–65 (standard) |
| Thickness | 3.0 mm – 4.5 mm (including sealing bead height) |
| Pressure Rating | PN6 / PN10 / PN16 standard; PN25 available |
| Temperature Range | -50°C to +150°C |
| Flange Standards | EN 1092-1 (Type A / Type B), ANSI B16.21 Class 150, DIN 2690, BS 4504 |
| Fabrication | Precision compression moulding |
| Certifications | RoHS, REACH; WRAS-approved compound available; FDA-grade EPDM available |
Quality & Compliance
| Test / Standard | Method | Specification |
|---|---|---|
| Hardness | ISO 48-4 / ASTM D2240 | Shore A 60 ± 5 |
| Tensile Strength | ISO 37 / ASTM D412 | ≥ 8 MPa |
| Elongation at Break | ISO 37 | ≥ 250% |
| Compression Set | ISO 815 / ASTM D395B | ≤ 20% (22h @ 70°C) |
| Ozone Resistance | ISO 1431-1 | No cracking (100 pphm, 40°C, 72h) |
| Heat Aging | ISO 188 (70h @ 100°C) | ≤ ±15% property change |
| Water Absorption | ISO 1817 (water, 70°C, 24h) | ≤ +5% mass change |
| WRAS Approval | Water Regulations Advisory Scheme | Available — drinking water compliance |
| FDA Compliance | 21 CFR 177.2600 | Available — food contact grade |
| RoHS / REACH | EU Directives 2011/65/EU, 1907/2006 | Compliant — all substances declared |
| Dimensional Inspection | EN 1514-1 / ANSI B16.21 | 100% OD, ID, bolt holes checked |
Applications
The DN50 EPDM full-face flange gasket is suitable for compatible flange joints in water pipelines, HVAC systems, cooling-water circuits, pump connections, valve assemblies, tank outlets and general industrial equipment. The full-face structure is commonly selected when the gasket must cover the flange face and align with bolt holes during installation. EPDM should be considered for water, moisture, ozone and outdoor exposure. It is not normally selected for petroleum oil, fuel or hydrocarbon media. The final gasket specification should be confirmed according to the flange standard, pressure class, surface condition, bolt-load method, temperature and contact media.
Customization Options
Custom DN50 EPDM full-face flange gaskets can be produced according to flange standards, 2D drawings, dimensional sketches or physical samples. Buyers can specify the gasket thickness, outer diameter, inner diameter, bolt-hole quantity, bolt-hole diameter, PCD, Shore A hardness, tolerance and packaging method. Standard flat gaskets can often be die-cut or water-jet cut from EPDM sheet. Molded profiles can be reviewed when special sealing lips, grooves or tighter geometry control are required. Please provide the media, temperature, pressure, flange standard, order quantity and annual demand for accurate review.
What Information Should Buyers Provide for a Quote?
- Flange standard or product drawing
- Nominal size: DN50
- Pressure class
- Outer diameter and inner diameter
- Gasket thickness
- Bolt-hole quantity
- Bolt-hole diameter
- Bolt circle diameter
- Dimensions and tolerances
- EPDM hardness requirement
- Operating temperature
- Operating pressure
- Contact media
- Application environment
- Required quantity
- Estimated annual volume
- Compliance requirements
- Packaging requirements
FAQ
What is a DN50 EPDM full-face flange gasket used for?
A DN50 EPDM full-face flange gasket is used for static sealing between compatible DN50 flange faces. It covers the full flange surface and includes bolt holes, helping seal water, HVAC or outdoor flange connections when the gasket is properly compressed.
What is the difference between a full-face gasket and a ring gasket?
A full-face gasket extends across the complete flange contact surface and includes bolt holes. A ring gasket seals around the central bore and normally fits inside the bolt circle. The correct option depends on the flange face type and installation requirements.
Is EPDM suitable for oil or fuel applications?
EPDM is commonly selected for water, hot water, outdoor exposure, ozone and weather resistance. It is not normally recommended for petroleum oils, fuels or hydrocarbon media. NBR, HNBR or FKM should be reviewed when oil or fuel compatibility is required.
Can the thickness and bolt-hole pattern be customized?
Yes. Gasket thickness, OD, ID, bolt-hole quantity, bolt-hole diameter and PCD can be customized according to the flange standard or drawing. Buyers should confirm the pressure class and mating flange dimensions before production.
Which manufacturing process is suitable for this gasket?
Flat DN50 EPDM full-face flange gaskets are commonly produced by die cutting or water-jet cutting. Rubber molding can be reviewed when the gasket requires a special profile, sealing lip, locating feature or higher dimensional control.
Are samples available before bulk production?
Samples are available upon request. Sample planning depends on the gasket thickness, EPDM hardness, dimensions, tolerance, production method and quantity. Please provide the flange standard, drawing or physical sample for technical review.
Request a Custom Quote
Send your DN50 flange standard, drawing, dimensional sketch or physical sample for technical review. Please include the required thickness, OD, ID, bolt-hole pattern, EPDM hardness, contact media, operating temperature, pressure class, quantity and packaging requirements so we can prepare a practical quotation.
