This standard specifies the technical requirements, inspection rules and sampling methods for pneumatic rubber seals. This standard applies to all types of pneumatic seals for general use with compressed air as the working medium. This standard can be used as a reference for pneumatic seals for special purposes. JB/T 6660-1993 General Technical Requirements for Pneumatic Rubber Seals JB/T6660-1993 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T6660-1993
General Technical Conditions for Pneumatic Rubber Seals Published on May 7, 1993
Ministry of Machinery Industry of the People's Republic of China
Implementation on January 1, 1994
Mechanical Industry Standard of the People's Republic of China
General Technical Conditions for Pneumatic Rubber Seals Subject Content and Scope of Application
This standard specifies the technical requirements, inspection rules and sampling methods for pneumatic rubber seals. JB/T6660-1993
This standard applies to all types of pneumatic seals for general use with compressed air as the working medium. This standard can be used as a reference for pneumatic seals for special purposes.
Cited Standards
GB2828bzxz.net
GB 3452.2
GB5720
GB5721
GB5722
GB7038
GB7039
GB9880
JB/JQ209006
Technical requirements
Usage conditions
3.1.1 Working medium
Batch inspection counting sampling procedures and sampling tables (applicable to continuous batch inspection) Dimension series and tolerances of O-rings for hydraulic and pneumatic applications Appearance quality inspection standards for O-rings Standard method for testing rubber seal rings
General provisions for marking, packaging and transportation of rubber seal productsGeneral provisions for storage of rubber seal products
O-ring rubber seals for ordinary hydraulic systemsReciprocating seal ring rubber
Multi-layer lip seal components for hydraulic and pneumatic use
General technical conditions for pneumatic components
Method for measuring stack height
Pneumatic rubber seals are installed in pneumatic components. The compressed air used is dry and clean air that has been dehydrated and filtered. When oil mist lubrication is required, it should be dry and clean air containing oil mist. 3.1.2 Working pressure
Pneumatic rubber seals can work under the condition that the compressed air pressure of the pneumatic system is not more than 2.5MPa. 3.1.3 Operating temperature
The operating temperature of pneumatic rubber seals is -40~+100℃. 3.1.4 Movement speed
When the pneumatic rubber seal is used as a dynamic seal, the movement speed of the moving parts shall not exceed 0.5m/s. 3.2 Material requirements
The chemical composition and physical performance indicators of the pneumatic rubber seal materials shall comply with the provisions of GB7038 and GB7039. 3.3 Geometric accuracy
The size, geometric accuracy and appearance quality of the seal shall comply with the provisions of GB3452.1 and GB3452.2, and the Ministry of Machinery Industry of the People's Republic of China approved on May 7, 1993 and implemented on January 1, 1994
Test methods and inspection rules
JB/T6660—1993
The test methods and inspection rules for the chemical composition, physical properties of the seal rubber shall comply with the provisions of GB7038 and GB7039. 4.1
The method and inspection tools for the dimensional accuracy inspection of the seal shall comply with the provisions of GB5720 and GB9880. 4.2
4.3 Pneumatic rubber seals shall be inspected and qualified by the quality inspection department of the manufacturer before leaving the factory, and shall be accompanied by a product certificate. 4.4 When conducting performance tests and reliability tests on pneumatic rubber seals, they shall comply with the requirements of Article 3.1 of this standard. 5
Sampling method
During random inspection, the sampling method shall be carried out in accordance with GB2828, and the appearance quality and size inspections shall adopt general inspection levels II and I respectively, with an AQL value of 2.5. Special requirements shall be agreed upon by the supply and demand parties. 6 Assembly
Assembly must be carried out in accordance with the requirements of the drawings and the provisions of the technical documents. 6.2
Seals that fail the inspection shall not be used for assembly. 6.3 The parts on the parts where the seals pass shall not have sharp corners or burrs, and the orifices and shaft ends shall be chamfered or rounded. 6.4 The seals shall be installed in the grooves in a clean state, without distortion, and grease shall be applied in the grooves or on the seals. If it is necessary to pass through the keyway, shoulder or thread, a special installation tool should be used to avoid damaging the seal. 7
Marking, packaging, transportation, storage
7.1 The marking, packaging and transportation of pneumatic rubber seals shall comply with the provisions of GB5721. 7.2 The storage of pneumatic rubber seals shall comply with the provisions of GB5722. Additional remarks:
This standard was proposed and managed by Wuxi Pneumatic Technology Research Institute. This standard was drafted by Guangzhou Machine Tool Research Institute. The main drafter of this standard is Ye Mai.
People's Republic of China
Mechanical Industry Standard
General Technical Conditions for Rubber Seals for Pneumatic Use JB/T 6660-1993
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Postal Code 100044)
Format 880×1230
Print Sheet 3/8
Word Count 4,000
First Edition in January 1994
First Printing in January 1994
Print Quantity 1500
Price 5.00 Yuan
Mechanical Industry Standard Service Network: http=//www.JB.ac.cn60999
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