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Sealing series >> Metal Gaskets >> API Oval Gasket

API Oval Gasket

¡¡¡¡The metallic ring pad is subject to forging, heat treatment and machining. It is a kind of metallic.The metallic ring pad is subject to forging, heat treatment and machining. It is a kind of metallic high-temperature, high-pressure valve covers, etc. The product is especially suitable to situations with pressure and temperature fluctuations to maintain fine sealing performance. Regular R-type pad is divided into oval type or octagonal type in terms of cross section. Standard R-type ring pad is manufactured according to API6A and ASMEB16.20 specifications. The maximum operational pressure is 10000PSI. In dovetail groove flange the octagonal pad and oval pad are interchangeable. RX-type octagonal pad is applicable for standard R-type rind pad with enhanced pressure and flange groove sealing face identical to that of the R-type.BX-type octagonal pad is applicable for systems with enhanced pressure and design application as high as 15000PSI. We provide a variety of materials and types for different design and operational requirements. Please refer to the table of material properties.
Note: When octagonal type is chosen, the material hardness of the pad should be 15~20HB lower than that of the flange face. It is recommended the pad is not recycled.

Applicable standards:
ANSI B16.5-1973 ¡¢ JPI-75-15-70 ¡¢ GB 699 ¡¢ GB1220 ¡¢ JB755 ¡¢ HG20633-97

Major forms of metallic ring pad:


Main technique parameters of metal gasket:
Material Maximum hardness¡¡BRINELL Temperature£¨ ¡æ £© Abbreviations
marker
Brucellosis Rockwell
Soft Iron 90 56 -60 500 D
Low Carbon Steel 120 68 -40¡«540 S
304SS 160 83 -250 540 304
304LSS 160 83 -250 540 304L
316SS
160
83 -200 815 316
316LSS 160 83 -200 815 316
321SS 160 83 -200 870 321
347SS
160 83 -200 870 347
410SS 170 86 -40 850 410
5Cr-0.5Mo 130 -29 650
Copper 80 -100 315
Aluminum 35 -200 425
Inconel 600 150 -100 1095
Incoloy 825 150 -100 1095
Monel 400 150 -100 760
Titanium 215 -200 540
Nickel 200 - 110 200 760
Hastelloy B2 230 -100 1095
Hastelloy C276 210 -100 1095

Notes for Order: The following parameters shall be noted in the order of metal gasket.
Example:

1. Type of metal gasket: R
2. Shape: Octagonal
3. Flange Standard: Ha20633
4. Gasket No.: P27
5. Material: 316L
6. Hardness: HB160
7. Diameter: DN100
8. Pressure: 11MPA

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