Standard No.:	GB/T 3452.3-2005
Chinese Name:	液压气动用O形橡胶密封圈 沟槽尺寸
English Name:	Housing dimensions for O-ring elastomer seals in hydraulic and pneumatic applications
Professional Classification:	G43 Rubber seal
Professional Classification:	GB National Standard
ICS Classification:	23.040.80 Seals for pipe and hose assemblies
Issued by:
Issued on:	2005-09-19
Implemented on:	2006-04-01
Status:	VALID
Replace:	GB/T3452.3-1988 Fluid power systems-O-Ring-Design criteria for O-Ring housing-Basic calculation
Language:	English
File Format:	PDF
Word Count:
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1 Scope

This part of GB/T 3452 specifies the housing dimension and tolerance of O-shaped rubber sealing ring (hereinafter referred to as O-ring) for general hydraulic and pneumatic applications.

This part of GB/T 3452 is applicable to the O-rings specified in GB/T 3452.1-2005 Fluid power systems - O-rings - Part 1: Inside diameters, cross-sections, tolerances and size identification code. If the working pressure exceeds 10 MPa, the structural type with anti-extrusion ring shall be adopted.

Note: The housing dimension of O-ring for special application shall be determined by the manufacturer and the user of O-ring through negotiation.

2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 3452. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part of GB/T 3452. However parties to agreements based on this part of GB/T 3452 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.

GB/T 3452.1-2005 Fluid power systems - O-rings - Inside diameters, cross-sections, tolerances and size identification code
GB/T 17446 Fluid power systems and components - Vocabulary (GB/T 17446-1998; idt ISO 5598: 1985)

3 Terms, definitions and alphabetic symbols

For the purposes of this part, the terms and definitions given in GB/T 17446 apply.

This part adopts the following alphabetic symbols:

d1——inner diameter of O-ring;

d2——cross-section diameter of O-ring;