CB 975-1981 Metal Sealing Gasket CB975-1981 Standard Download Decompression Password: www.bzxz.net

Standard of the Sixth Machinery Industry Department of the People's Republic of China
Sealing pad
CB975-81
Standard of the Sixth Machinery Industry Department of the People's Republic of China
Metal sealing pad
CB 975-81
Metal sealing pad is used for sealing conventional submarines and is used in conjunction with retractable metal struts (CB844-76). 1. The types and main dimensions of metal sealing pads are as shown in the figure below. 5210
1-shell; 2-sealing ring; 3-pressure ring; 4-stop spring; 5-pressure bolt Standard of the Sixth Machinery Industry Department of the People's Republic of China
April 1, 1982
Total 2 pages Page 2
CB 975-81
Marking example
Metal sealing pad
CB975-81
2. Metal plugging gaskets shall comply with the requirements of this standard and be manufactured according to the uniformly specified drawings. The materials of metal plugging gaskets are as follows:
Bare body pressure ring, clamping boltwww.bzxz.net
Retaining spring
Sealing ring
4. The pressure ring is positioned according to the positioning pin when installed.
Group 3
5. The pressure ring and retaining spring shall be galvanized with a coating thickness of 30μm. No.
GB 700—79
YB248--64
HG6-669-74
6. After the shell is welded, the weld shall be tested for kerosene, and defects such as cracks and pores are not allowed. 7. The surface of the plugging gasket shall be smooth, and red alkyd enamel shall be applied after rust removal. 8. The weight of the metal plugging gasket is 5.5kg.
9. The leak-proof pad should be inspected and accepted by the manufacturer's technical inspection department and stamped.
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