This standard specifies the types and sizes of O-type vacuum rubber seals. This standard applies to the seals of reciprocating vacuum mechanical equipment with atmospheric pressure outside and vacuum chamber pressure higher than 1×10(-4Pa), and the reciprocating speed is lower than 0.2m/s at the specified temperature. O-type seals can also be used for sealing of vacuum mechanical equipment in other situations. JB/T 1092-1991 Types and sizes of O-type vacuum rubber seals JB/T1092-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
O-type Rubber Sealing Ring for Vacuum
Type and Size
Subject Content and Scope of Application
JB1092-91
This standard specifies the type and size of O-type rubber sealing ring for vacuum. This standard is applicable to the sealing of reciprocating vacuum mechanical equipment with atmospheric pressure outside and vacuum chamber pressure higher than 1X10-\Pa, at the specified temperature and reciprocating speed lower than 0.2m/s. O-type sealing rings can also be used for sealing in other cases of vacuum mechanical equipment. 2 Reference Standards
GB3452.1 Dimension Series and Tolerance of O-type Rubber Sealing Ring for Hydraulic and Pneumatic Use 3 Types and Sizes
3.10 The preferred values ​​of the type and series size of O-type rubber sealing rings for vacuum shall comply with the provisions of Figure 1 and Table 1. Figure 1
Approved by the Ministry of Machinery and Electronics Industry on January 1, 1991 and implemented on July 1, 1991
Inner diameter 4
Limit deviation
Note: and indicates applicable.
*千08
Cross-section diameter
“0乾99
“0千0
JB1092—91
“0千00°2
Inner diameter 4,
Limit deviation
10千081
Cross-section diameter
“0乾S9
3.2 Marking example
The O-type vacuum rubber sealing ring with inner diameter d=48.7mm and cross-section diameter d2=5.30mm is marked as: 48.7X5.30JB1092
O-type sealing ring
4 Technical requirements
4.1 The working medium is mechanical pump oil, diffusion pump oil or vacuum grease. 4.2 The working temperature is -25～+80℃.
4.3 When working under the condition of protective gas filling, the protective gas pressure shall not be higher than 5×10\Pa. 0
10干ss
*0千08
0千00
4.4 The physical and mechanical properties of the rubber material shall ensure that the vacuum chamber pressure is not higher than 1×10-\Pa. 4.50 type rubber ring is pressed by 45° angle mold opening. No bubbles, impurities and concave-convex defects are allowed on the working surface. The appearance quality of the non-working surface shall meet the requirements of Table 2.
Seam misalignment
JB1092—91
Nominal diameter is less than 50mm
Non-working surface, bubble diameter is not more than 1mm, no more than 2 places
Non-working surface, impurity area is not more than 1mm2, no more than 2 places
Non-working surface, convex and concave is not more than 0.5mm, area is not more than 2mm, no more than 2 places
Burr height and shear damage depth shall not exceed
Allowed to exist, but shall not exceed the tolerance range mark
Nominal diameter 5 0~200mm
Non-working surface, bubble diameter is not more than 2mm, no more than 2
Non-working surface, impurity area is not more than 2mm, no more than 2
Non-working surface, convex and concave is not more than 0.5mm, area is not more than 6mm, no more than 2
Burr height and shear depth shall not exceed
Allowed to exist, but shall not exceed 0.5mm
Note: In order to make the surface of the sealing ring smooth, the surface roughness R of the mold is required to be 0.2um or hard chrome plated polishing. 4.6 For accessories and installation structure types, please refer to Appendix A (reference parts). 17
JB1092—91
Appendix A
0 Type of rubber seal ring for vacuum and installation structure (reference part)
A1 The type and series size of the sealing sleeve are shown in Figure A1 and Table A1. 10
Nominal diameter
Note: ① The material of the sealing sleeve is A3 or H62. 0.5
② The dimensions of D and D. are taken according to the corresponding values ​​of the selected sealing drawing dimensions. 18
Nominal diameter
JB1092—91
A2 The type and series size of the flat gasket are shown in Figure A2 and Table A2. 0. 2× 45*
Note: ① The material of the flat gasket is A3 or H62.
② The dimension of D is taken according to the corresponding values ​​of the selected sealing garden dimensions. Shaft diameter
A3 installation example and seal groove requirements are recommended as shown in Figure A3. Vacuum
JB1092-91
Note: The surface roughness of the inner surface of the vacuum chamber: the sealing surface R. is 1.6um, and the shaft surface roughness R. is 0.8um. ​​Additional remarks:
This standard is proposed and managed by the National Vacuum Technology Standardization Technical Committee. This standard is drafted by the Shenyang Vacuum Technology Research Institute. The main drafter of this standard is Zhang.
From the date of implementation of this standard, the original JB1092-83O type vacuum rubber seal ring type and size" will be invalid. 20
People's Republic of China
Mechanical Industry Standard
Vacuum Dynamic Seal Type and Dimension
JB1090~1092-91
Published and distributed by the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry, Postal Code 100081)
(Box 8144, Beijing
Copyright reserved
Reproduction prohibited
Printed by Qinghe County Printing Factory, Hebei Province
Sheet No. 1,
Format 880×1230wwW.bzxz.Net
First edition in October 1991
Word count 40000
First printing in October 1991
Print run 00.001-1000
Price 2.60 Yuan
No. 0110
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