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;
Foreword i
1 Scope
2 Normative references
3 Terms, definitions and alphabetic symbols
4 Housing type of O-ring
4.1 Radial seal
4.2 Axial seal
5 Housing dimensions and tolerances of O-ring
5.1 Radial seal
5.2 Axial seal
5.3 Housing dimensions and tolerances
5.4 Coaxiality tolerance of housing
5.5 Surface roughness
6 Application selection of O-rings and determination of housing dimensions
6.1 Application selection of O-rings
6.2 Determination of O-ring housing dimension
Annex A (Informative) O-ring housing design criteria
