Metallic Gasket Materials: R38-R64
| 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 | ||||||
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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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