Ring Joint Gasket

High temperature and high pressure conditions are common in the oil and gas industry. To sustain under these pressures, and perform well on a long term basis, Sealtech manufactures ring joint gaskets which are resistant and customised. The various styles in which the gaskets are available are:
- R
- Rx
- bx
Ring Material
Various forms of material, shown in the table below, are used for manufacturing Ring Joint Gaskets, which may be manufactured from special material, as per customer's requirement.
Material (Trade Name) | Ring Identification | DIN Specification | DIN Material No. | AISI ASTM UNS | B.S. | Hardness (max)* | Temprature (0C)* | Specify Density (gr / cm3) | ||
Brinell HB | Rockwell B | Min. | Max. | |||||||
Soft iron | D | - | - | - | - | 90 | 56 | -60 | 500 | 7.85 |
Steel (LCS) | S | - | - | - | - | 120 | 68 | -40 | 500 | 7.85 |
ASTM A182-F5 | F5 | 12CrMo 195 | 1.7362 | A182-F5 | - | 130 | 72 | -40 | 650 | 7.9 |
Stainless Steel 304 | S 304 | X5CrNi 1810 | 1.4301 | 304 | 304S15/16/31 | 160 | 83 | -250 | 550 | 7.9 |
Stainless Steel 304L | S 304L | X2CrNi 1911 | 1.4306 | 304 L | 304S11 | 160 | 83 | -250 | 550 | 7.9 |
Stainless Steel 309 | S 309 | X15CrNiSi 2012 | 1.4828 | 309 | 309S24 | 160 | 83 | -100 | 1000 | 7.9 |
Stainless Steel 316 | S 316 | X5CrNiMo 1712 | 1.4401 | 316 | 316S31/33 | 160 | 83 | -100 | 550 | 7.9 |
Stainless Steel 316L | S 316L | X2CrNiMo 1713 | 1.4404 | 316 L | 316S11/13 | 160 | 83 | -100 | 550 | 7.9 |
Stainless Steel 316 Ti | S 316 Ti | X10CrNiMoTi 1712 | 1.4571 | 316 Ti | 320S31 | 160 | 83 | -100 | 550 | 7.8 |
Stainless Steel 321 | S 321 | X6CrNiTi 1810 | 1.4541 | 321 | 321S12/49/87 | 160 | 83 | -250 | 550 | 7.9 |
Stainless Steel 347 | X347 | X6CrNiNb 1810 | 1.4550 | 347 | 347S31 | 160 | 83 | -250 | 550 | 7.9 |
Material | Identification | Hardness (Brinell HB) | Hardness (Rockwell B) | Density |
Inconel | 625 | 180 | 90 | 8.0 |
Inconel | 825 | 180 | 90 | 8.0 |
Monel | 400,000 | 180 | 90 | 8.0 |
Pressure Class Rating
150 | 3/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | 10000 | |
R-11 | 1/2 | ||||||||
R-12 | 1/2 | 1/2 | |||||||
R-13 | 3/4 | 1/2 | |||||||
R-14 | 3/4 | 3/4 | |||||||
R-15 | 1 | ||||||||
R-16 | 1 | 1 | 1 | 3/4 | |||||
R-17 | 11/4 | ||||||||
R-18 | 11/4 | 11/4 | 11/4 | 1 | |||||
R-19 | 11/2 | ||||||||
R-20 | 11/2 | 11/2 | 11/2 | 11/2 | 11/2 | 11/2 | |||
150 | 3/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | 10000 | |
R-21 | 11/4 | ||||||||
R-22 | 2 | ||||||||
R-23 | 2 | 11/2 | 2 | ||||||
R-24 | 2 | 2 | 2 | 2 | |||||
R-25 | 21/2 | ||||||||
R-26 | 21/2 | 2 | 21/2 | ||||||
R-27 | 21/2 | 21/2 | 21/2 | 21/2 | |||||
R-28 | 21/2 | ||||||||
R-29 | 3 | ||||||||
R-30 | 3 | ||||||||
150 | 3/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | 10000 | |
R-31 | 3 | 3 | 3 | 3 | |||||
R-32 | 3 | ||||||||
R-33 | 31/2 | ||||||||
R-34 | 31/2 | ||||||||
R-35 | 3 | 3 | |||||||
R-36 | 4 | ||||||||
R-37 | 4 | 4 | 4 | 4 | |||||
R-38 | 4 | ||||||||
R-39 | 4 | 4 | |||||||
R-40 | 5 | ||||||||
150 | 3/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | 10000 | |
R-41 | 5 | 5 | 5 | 5 | |||||
R-42 | 5 | ||||||||
R-43 | 6 | ||||||||
R-44 | 5 | 5 | |||||||
R-45 | 6 | 6 | 6 | 6 | |||||
R-46 | 6 | 6 | |||||||
R-47 | 6 | ||||||||
R-48 | 8 | ||||||||
R-49 | 8 | 8 | 8 | 8 | |||||
R-50 | 8 | 8 | |||||||
150 | 3/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | 10000 | |
R-51 | 8 | ||||||||
R-52 | 10 | ||||||||
R-53 | 10 | 10 | 10 | 10 | |||||
R-54 | 10 | 10 | |||||||
R-55 | 10 | ||||||||
R-56 | 12 | ||||||||
R-57 | 12 | 12 | 12 | 12 | |||||
R-58 | 12 | ||||||||
R-59 | 14 | ||||||||
R-60 | 12 | ||||||||
150 | 3/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | 10000 | |
R-61 | 14 | ||||||||
R-62 | 14 | ||||||||
R-63 | 14 | ||||||||
R-64 | 16 | ||||||||
R-65 | 16 | 16 | |||||||
R-66 | 16 | 16 | |||||||
R-67 | 16 | ||||||||
R-68 | 18 | ||||||||
R-69 | 18 | 18 | |||||||
R-70 | 18 | 18 | |||||||
150 | 3/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | 10000 | |
R-71 | 18 | ||||||||
R-72 | 20 | ||||||||
R-73 | 20 | 20 | |||||||
R-74 | 20 | 20 | |||||||
R-75 | 20 | ||||||||
R-76 | 24 | ||||||||
R-77 | 24 | ||||||||
R-78 | 24 | ||||||||
R-79 | 24 | ||||||||
R-80 | 22 | ||||||||
150 | 3/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | 10000 | |
R-81 | 22 | ||||||||
R-82 | 1 | ||||||||
R-83 | |||||||||
R-84 | 1½ | ||||||||
R-85 | 2 | ||||||||
R-86 | 2½ | ||||||||
R-87 | 3 | ||||||||
R-88 | 4 | ||||||||
R-89 | 3½ | ||||||||
R-90 | 5 | ||||||||
150 | 3/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | 10000 | |
R-91 | 10 | ||||||||
R-92 | |||||||||
R-93 | 26 | ||||||||
R-94 | 28 | ||||||||
R-95 | 30 | ||||||||
R-96 | 32 | ||||||||
R-97 | 34 | ||||||||
R-98 | 36 | ||||||||
R-99 | |||||||||
R-100 | 26 | ||||||||
150 | 3/600 | 900 | 1500 | 2500 | 2000 | 3000 | 5000 | 10000 | |
R-101 | 28 | ||||||||
R-102 | 30 | ||||||||
R-103 | 32 | ||||||||
R-104 | 34 | ||||||||
R-105 | 36 |

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