This part of GB/T 3452 specifies the inside diameters, cross-sections, tolerances and size identification code for O-shaped rubber sealing rings (hereinafter referred to as "O-rings") used in fluid power systems for general purpose applications (series G), as well as for aerospace and similar applications (series A).
The dimensions and tolerances specified in this part are suitable for any elastomeric material, provided that suitable tooling is available.
Note: The tooling most commonly available is based on 70 IRHD NBR shrinkage rates. For materials that shrink differently from the standard NBR compound, a special mould can be required to maintain the mean diameters and the tolerance limits listed.
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 to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part 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.
1 Scope
This part of GB/T 3452 specifies the inside diameters, cross-sections, tolerances and size identification code for O-shaped rubber sealing rings (hereinafter referred to as "O-rings") used in fluid power systems for general purpose applications (series G), as well as for aerospace and similar applications (series A).
The dimensions and tolerances specified in this part are suitable for any elastomeric material, provided that suitable tooling is available.
Note: The tooling most commonly available is based on 70 IRHD NBR shrinkage rates. For materials that shrink differently from the standard NBR compound, a special mould can be required to maintain the mean diameters and the tolerance limits listed.
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 to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part 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 3452.2 Appearance quality acceptance criteria for rubber O-rings (GB/T 3452.2-1987, neq ISO/DP 3601-3:1987)
GB/T 17446 Fluid power systems and components — Vocabulary (GB/T 17446-1998, idt ISO 5598:1985)
3 Terms and Definitions
