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Can Oval Ring Joint Gasket be Interchanged with octagonal Ring Joint Gaskets?


The sealing surfaces of oval ring joint gasket is oval shape, and octagonal sealing surfaces are inclined, the two are different.

The octagonal ring gasket is matched with the flange groove, which is mainly manifested as surface contact. Compared with the elliptical ring gasket, although it is difficult to close the flange groove, it can be used again, and because the section is a straight line, it is easy to process.

The oval ring type gasket is consistent with the flange groove, and the sealing performance is good, but the processing accuracy is high, which increases the manufacturing cost. At the same time, the oval ring pad cannot be reused.

If the flange is a trapezoidal groove, it is estimated to be interchangeable. The commonly used r-shaped ellipse pads are divided into elliptical or octagonal types according to their cross-sections. Standard r-shaped ring gaskets are manufactured in accordance with API 6A and ASME B16.20 standard sizes, and the maximum working pressure is 10000PSI. In trapezoidal groove flanges, octagonal gaskets can be interchanged with oval gaskets. RX type is suitable for standard R type ring gaskets with pressurization, and also suitable for the same R type flange groove sealing cover. Type BX is designed for pressure enhancement and is suitable for pressure systems up to 150 psi.