PETROCHEMICAL
RING TYPE JOINTS
Ring type joints are heavy duty, high pressure gaskets largely used in offshore petrochemical applications. All ring type joints are manufactured according to ASM B16.20 and are available in various different styles and materials which are listed below.
OVAL RING JOINT
OCTAGONAL RING JOINT
- Used for high pressure applications
- High integrity seal at high pressures
- Suitable for flat and round bottom groove flanges
- Max pressure - Up to class 2500
- Used for high pressure applications
- High integrity seal at high pressures
- Suitable for flat bottom groove flanges
- Max pressure - Up to class 2500
TYPE RX RING JOINT
TYPE BX RING JOINT
- Used for high pressure applications
- High integrity seal at high pressures
- Suitable for flat bottom groove flanges
- Max pressure - Up to class 5000
- Used for high pressure API applications
- Efficiency of seal improves with increasing internal pressure.
- Suitable for API 6BX flanges
- Max pressure - Up to class 20,000
DIMENSIONS
RING TYPE JOINT - OVAL DIMENSIONS
RING TYPE JOINT - OCTAGONAL DIMENSIONS
RING TYPE JOINT - RX DIMENSIONS
RING TYPE JOINT - BX DIMENSIONS
MATERIALS
| MATERIAL | HARDNESS (HB) | TEMPERATURE LIMITATION | IDENTIFICATION |
|---|---|---|---|
| Soft Iron | 90 | -60 to +400°C | D |
| Low Carbon Steel | 120 | -40 to +500°C | S |
| 4%-6% Cr 1/2% Mo: F5 | 130 | -125 to +500°C | F5 |
| Stainless Steel 304 | 160 | -250 to +650°C | S304 |
| Stainless Steel 316 | 160 | -110 to +800°C | S316 |
| Stainless Steel 321 | 160 | -250 to +870°C | S321 |
| Stainless Steel 347 | 160 | -250 to +870°C | S347 |
| Stainless Steel 410 | 170 | -20 to +500°C | S410 |
| Inconel 625 | - | 1000°C | 625 |
| Inconel 825 | - | 1000°C | 825 |
| Hastelloy C-276 | - | 1000°C | C-276 |
| Duplex | - | 800°C | S31803 |
| Titanium | - | 540°C | TI |
MATERIAL