Metallic Gasket Materials: R11-R37
| 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. | |
| R11 | 1/2 | ||||||
| R12 | 1/2 | 1/2 | |||||
| R13 | 3/4 | 1/2 | |||||
| R14 | 3/4 | 3/4 | |||||
| R15 | 1 | ||||||
| R16 | 1 | 1 | 1 | 3/4 | 1 | 1 | |
| R17 | 1-1/4 | ||||||
| R18 | 1-1/4 | 1-1/4 | 1-1/4 | 1 | 1-1/4 | 1-1/4 | |
| R19 | 1-1/2 | ||||||
| R20 | 1-1/2 | 1-1/2 | 1-1/2 | 1-1/2 | 1-1/2 | ||
| R21 | 1-1/4 | ||||||
| R22 | 2 | ||||||
| R23 | 2 | 1-1/2 | 2 | ||||
| R24 | 2 | 2 | 2 | ||||
| R25 | 2-1/2 | ||||||
| R26 | 2-1/2 | 2 | 2-1/2 | ||||
| R27 | 2-1/2 | 2-1/2 | 2-1/2 | ||||
| R28 | 2-1/2 | ||||||
| R29 | 3 | ||||||
| R30 | 3 | ||||||
| R31 | 3 | 3 | 3 | ||||
| R32 | 3 | ||||||
| R33 | 3-1/2 | ||||||
| R34 | 3-1/2 | 3-1/2 | 3-1/2 | ||||
| R35 | 3 | 3 | |||||
| R36 | 4 | ||||||
| R37 | 4 | 4 | 4 | 3-1/2 | |||
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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.
UNLESS OTHERWISE SPECIFIED, GRUV-TITE FORGED SEAMLESS RING JOINT GASKETS
WILL BE FURNISED IN OVAL DESIGN.
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