Ring Joint Gasket Catalogue - ASME B16.20
Metallic ring joint gasket solutions for high pressure and temperature applications
Ring Gasket Types
ASME B16.20 Standard
R Type Oval Ring Gasket
Standard oval section ring joint gasket designed for high-pressure applications.
Pressure Class
900# - 2500#
Temperature Range
-29°C ile +650°C
Size Range
1/2" - 48"
Standards
ASME B16.20, API 6A, ISO 10423
Compatible Flanges:
RTJ FlanşlarHigh Pressure SystemsASME B16.5
ASME B16.20 Standard Dimensions
| Nominal Size | Outside Dia (mm) | Inside Dia (mm) | Width (mm) | Groove Type |
|---|---|---|---|---|
| 1" | 60.5 | 35.1 | 11.2 | R-11 |
| 2" | 79.2 | 53.8 | 11.2 | R-11 |
| 4" | 127.0 | 101.6 | 11.2 | R-11 |
| 8" | 200.2 | 174.8 | 11.2 | R-11 |
| 12" | 269.9 | 244.5 | 11.2 | R-11 |
| 16" | 330.2 | 304.8 | 11.2 | R-11 |
Key Features
- Oval section design
- High pressure resistance
- Excellent sealing performance
- Easy installation
- Standard dimensions
- Long service life
Applications
- Petrochemical plants
- High pressure pipelines
- Power generation
- Offshore platforms
- Compressor stations
- Critical process systems
Sealing Performance
pressureRating
2500#
temperatureRange
-29°C to +650°C
leakRate
Zero
reusability
Limited
Design Features
- Oval section geometry
- Controlled compression
- Metal-to-metal sealing
- High contact pressure
- Corrosion resistant
- Test certified
Technical Notes
- Flange surface finish should be Ra 3.2–6.3 μm.
- Cleaning before assembly is critical.
- Compression rate should be between 15–20%.
- Re-use requires inspection and approval.
Detailed Technical Information and Quotation
Contact our expert team for detailed technical documents, application recommendations, and custom size quotations regarding this product type.