Annular Seal (RTJ Seal) is a high integrity, high temperature, high pressure seal for applications in the oil industry, oilfield drilling, pressure vessel connections, pipes, valves and more.
The movement of the ring packing (RTJ) can be described as an irregular flow in the groove of the deformed sealing flange due to the axial compressive load. Colored seal (RTJ seal) has a small load area, which leads to a large surface pressure between the sealing surface and the groove, the maintenance properties are poor and not suitable for reuse.
Ring joint gasket is machined from solid metal in a variety of shapes according to API 6A & ASME B16.20 standards,it's designed for high pressure ,high temperature or highly corrosive applications by selecting the most suitable material and shape. It is designed to with stand exceptionally high assembly loads over a small area, thus producing high seating stresses
Standards:
Products are manufactured in accordance with all relevant gasket standards to suit flange designations: API-6A,ASME B 16.20, ASME B 16.5, BS1560,, BS EN 1092, DIN, JIS, and NF, etc.
Type&Material
| Type | Material | Hardness(HB) | Temperature(ºC) |
| R-oval | Soft Iron | 90 | 530 |
| Low Carbon Steel | 120 | 530 | |
| SS304(18Cr-8Ni ) | 160 | 750 | |
| R-octagonal | SS316(16Cr-12Ni-2Mo) | 160 | 800 |
| SS347(18Cr-10Ni-Nb) | 160 | 800 | |
| SS410(13Cr Steel) | 170 | 700 | |
| RX | SS321(18Cr-10Ni-Ti) | 160 | 800 |
| Inconel | 140 | 1100 | |
| Titanium | 140 | 800 | |
| BX | Hastelloy | 130 | 800 |
| Nickel | 120 | 760 | |
| Copper | 50 | 400 | |
| Plain | Aluminum | 30 | 300 |
| Monel | 130 | 800 | |
| Other material |
| API Ring Number | Size of Flange, Inches | ||||||
| General Use | Oil Field Use | ||||||
| 150 lbs. | 300 to 600 lbs. | 900 lbs. | 1500 lbs. | 2500 lbs. | 500, 1000, 2000, 3000 lbs. | 5000 lbs. | |
| R38 | 4 | ||||||
| R39 | 4 | 4 | |||||
| R40 | 5 | ||||||
| R41 | 5 | 5 | 5 | ||||
| R42 | 5 | ||||||
| R43 | 6 | ||||||
| R44 | 5 | ||||||
| R45 | 6 | 6 | 5 | 6 | |||
| R46 | 6 | ||||||
| R47 | 6 | ||||||
| R48 | 8 | 6 | |||||
| R49 | 8 | 8 | 8 | ||||
| R50 | 8 | ||||||
| R51 | 8 | ||||||
| R52 | 10 | 8 | |||||
| R53 | 10 | 10 | 10 | ||||
| R54 | 10 | 10 | |||||
| R55 | 10 | ||||||
| R56 | 12 | ||||||
| R57 | 12 | 12 | 12 | ||||
| R58 | 12 | ||||||
| R59 | 14 | ||||||
| R60 | 12 | ||||||
| R61 | 14 | 14 | |||||
| R62 | 14 | ||||||
| R63 | 14 | ||||||
| R64 | 16 | ||||||
RTJ standard size gaskets are manufactured in accordance with API-6A and ANSI B16.2 specifications and are furnished in stock materials including soft iron, low carbon steel, 4-6 chrome (F5), 304 & 304L, 316 & 316L, 347, 410, Monel, Inconel and Incoloy. |
