Views: 10 Author: Site Editor Publish Time: 2024-12-13 Origin: Site
SS316 oval ring gasket has unique advantages in some special sealing surface designs. Its oval shape can better adapt to the irregular shape of the sealing surface or achieve effective sealing in a limited space.
When the oval ring gasket is installed between two connecting parts (such as flanges), a certain pressure is applied to the gasket by tightening the connecting bolts. The gasket deforms under the pressure and fills the tiny gap between the sealing surfaces. Since SS316 has a certain plasticity, it can form a good sealing contact under pressure to prevent the leakage of the medium. At the same time, the shape of the oval ring makes the pressure on the gasket more evenly distributed, further improving the sealing effect.
ZIZI is a manufacturer, trader, stockiest, supplier and exporter of SS316 Oval Ring Gasket.Last week, We received an order for SS316 Oval Ring Gasket R26, 2500#.Usually 2-inch flange with R26 metal gasket, Oval Ring gasket are instrumental in warding off crevice and pitting corrosion in chloride and halide surroundings, with a good tensile and creep-rupture strength increasing its market demand.
SS316 Oval Ring RTJ Gasket Materials and Hardness
A special RTJ gasket comes with a hole in the center for pressure equalization in the subsea pipeline application. You can see the different types of RTJ gaskets in the image below.
SS316 Oval Ring Gasket Equivalent Grades
STANDARD | WERKSTOFF NR. | UNS | JIS | AFNOR | EN | BS |
SS 316 | 1.4401 / 1.4436 | S31600 | SUS 316 | Z7CND17‐11‐02 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 | 316S31 / 316S33 |
SS316 RTJ Gasket Chemical Composition
CHEMICAL | LIMITS | C | Mn | P | S | Si | Ni | Cr | Mo | N |
SS316 | MIN | 10.0 | 16.0 | 2.00 | ||||||
MAX | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 14.0 | 18.0 | 3.00 | 0.01 |
Stainless Steel 316 RTJ Gasket Mechanical Property
MATERIAL | T.S (MPA) | Y.S (MPA) | EL % | R/A % |
SS316 | 515 min | 205 min | 30 min | 50 min |
Maximum Hardness for Ring Gaskets
A list of materials that can be used for metallic gaskets and the maximum acceptable hardness for these materials is given in ASME B16.20. Refer to the below table for more information.
GASKET MATERIALS | BRINELL HARDNESS NUMBER (max) | ROCKWELL HARDNESS NUMBER -B Scale (max) | IDENTIFICATION |
Soft iron | 90 | 56 | D |
Low carbon steel | 120 | 68 | S |
4-6% Chrome 1/2% molybdenum | 130 | 72 | F5 |
Type 410 Stainless Steel | 170 | 86 | S410 |
Type 304 Stainless Steel | 160 | 83 | S304 |
Type 316 Stainless Steel | 160 | 83 | S316 |
Type 347 Stainless Steel | 160 | 83 | S347 |
Type 410 Stainless Steel | 170 | 86 | S410 |
R26 Oval Ring Gasket Dimensions
R no | P-Pitch Dia | A-Width | B-Height Oval Ring |
R-11 | 34.14 | 6.35 | 11.2 |
R-12 | 39.7 | 7.95 | 14.2 |
R-13 | 42.88 | 7.95 | 14.2 |
R-14 | 44.45 | 7.95 | 14.2 |
R-15 | 47.63 | 7.95 | 14.2 |
R-16 | 50.8 | 7.95 | 14.2 |
R-17 | 57.15 | 7.95 | 14.2 |
R-18 | 60.33 | 7.95 | 14.2 |
R-19 | 65.1 | 7.95 | 14.2 |
R-20 | 68.28 | 7.95 | 14.2 |
R-21 | 72.24 | 11.13 | 17.5 |
R-22 | 82.55 | 7.95 | 14.2 |
R-23 | 82.55 | 11.13 | 17.5 |
R-24 | 95.25 | 11.13 | 17.5 |
R-25 | 101.6 | 7.95 | 14.2 |
R-26 | 101.6 | 11.13 | 17.5 |
R-27 | 107.95 | 11.13 | 17.5 |
R-28 | 111.13 | 12.7 | 19.1 |
R-29 | 114.3 | 7.95 | 14.2 |
R-30 | 117.48 | 11.13 | 17.5 |
R-31 | 123.83 | 11.13 | 17.5 |
R-32 | 127 | 12.7 | 19.1 |
R-33 | 131.78 | 7.95 | 14.2 |
R-34 | 131.78 | 11.13 | 17.5 |
R-35 | 136.53 | 11.13 | 17.5 |
R-36 | 149.23 | 7.95 | 14.2 |
R-37 | 149.23 | 11.13 | 17.5 |
R-38 | 157.18 | 15.88 | 22.4 |
R-39 | 161.93 | 11.13 | 17.5 |
R-40 | 171.45 | 7.95 | 14.2 |
R-41 | 180.98 | 11.13 | 17.5 |
R-42 | 190.5 | 19.05 | 25.4 |
R-43 | 193.68 | 7.95 | 14.2 |
R-44 | 193.68 | 11.13 | 17.5 |
R-45 | 211.15 | 11.13 | 17.5 |
R-46 | 211.15 | 12.7 | 19.1 |
R-47 | 228.6 | 19.05 | 25.4 |
R-48 | 247.65 | 7.95 | 14.2 |
R-49 | 269.88 | 11.13 | 17.5 |
R-50 | 269.88 | 15.88 | 22.4 |
R-51 | 279.4 | 22.23 | 28.7 |
R-52 | 304.8 | 7.95 | 14.2 |
R-53 | 323.85 | 11.13 | 17.5 |
R-54 | 323.85 | 15.88 | 22.4 |
R-55 | 342.9 | 28.58 | 36.6 |
R-56 | 381 | 7.95 | 14.2 |
R-57 | 381 | 11.13 | 17.5 |
R-58 | 381 | 22.23 | 28.7 |
R-59 | 396.88 | 7.95 | 14.2 |
R-60 | 406.4 | 31.75 | 39.6 |
R-61 | 419.1 | 11.13 | 17.5 |
R-62 | 419.1 | 15.88 | 22.4 |
R-63 | 419.1 | 25.4 | 33.3 |
R-64 | 454.03 | 7.95 | 14.2 |
R-65 | 469.9 | 11.13 | 17.5 |
R-66 | 469.9 | 15.88 | 22.4 |
R-67 | 469.9 | 28.58 | 36.6 |
R-68 | 517.53 | 7.95 | 14.2 |
R-69 | 533.4 | 11.13 | 17.5 |
R-70 | 533.4 | 19.05 | 25.4 |
R-71 | 533.4 | 28.58 | 36.6 |
R-72 | 558.8 | 7.95 | 14.2 |
R-73 | 584.2 | 12.7 | 19.1 |
R-74 | 584.2 | 19.05 | 25.4 |
R-75 | 584.2 | 31.75 | 39.6 |
R-76 | 673.1 | 7.95 | 14.2 |
R-77 | 692.15 | 15.88 | 22.4 |
R-78 | 692.15 | 25.4 | 33.3 |
R-79 | 692.15 | 34.93 | 44.5 |
R-92 | 228.6 | 11.13 | 17.5 |
Advantages of ASME B16.20 Oval Ring Gasket
Corrosion Resistance
In the chemical industry, corrosive media such as various acids, alkalis, and salt solutions are often exposed. SS316 oval ring gaskets have good corrosion resistance to acidic solutions such as sulfuric acid and hydrochloric acid, as well as alkaline solutions such as sodium hydroxide.
High Strength
SS316 has high strength and can withstand certain pressure and stress. In pipeline connections, especially in high-pressure pipeline systems, oval ring gaskets need to withstand the pressure from the medium inside the pipeline and the stress generated when the connecting flange is tightened.
Good Toughness
Its good toughness enables SS316 oval ring gaskets to adapt to certain deformations during installation without brittle fracture.
Adapt to Special Sealing Surfaces
The shape of the oval ring enables it to better adapt to some special shapes of sealing surfaces. Compared with circular gaskets, oval ring gaskets have unique advantages in some irregular sealing surfaces or sealing parts with limited space.
Uniform Pressure Distribution
In flange connections, oval ring gaskets can achieve more uniform pressure distribution when tightening bolts. Compared with circular gaskets, they can better fill the small gaps between sealing surfaces and reduce the possibility of leakage.
