ISO/TC 131/SC 7 - Sealing devices

This document specifies dimensions and tolerances of housings for wiper-rings used in reciprocating rod applications for fluid power cylinders. The range of rod diameters is from 4 mm to 450 mm.

This document specifies the dimensions and associated tolerances for a series of hydraulic cylinder piston seal housings to accommodate elastomer-energized, plastic-faced seals used in reciprocating applications. This document does not stipulate details of seal design, since the manner of construction of seals varies with each manufacturer. The design and material of the seals, and any associated anti-extrusion components, are determined by conditions such as temperature and pressure. This document only applies to the dimensional characteristics of products manufactured in accordance with this document. It does not apply to their functional characteristics.

This document specifies the dimensions and associated tolerances for a series of hydraulic cylinder rod seal housings to accommodate elastomer-energized, plastic-faced seals used in reciprocating applications. This document does not stipulate details of seal design, since the manner of construction of seals varies with each manufacturer. The design and material of the seals, and any incorporated anti-extrusion components, are determined by conditions such as temperature and pressure. This document only applies to the dimensional characteristics of products manufactured in accordance with this document. It does not apply to their functional characteristics.

ISO 5597:2018 establishes the preferred range of nominal dimensions and associated tolerances for a series of hydraulic cylinder rod and piston seal housings for reciprocating applications in the following range of dimensions: - for cylinders of 16 mm to 500 mm; - for rods of 6 mm to 450 mm. An additional range of seal housings is detailed in this document to meet the reduced envelope requirements of the 160 bar (16 MPa)[1] compact series of ISO 6020‑2; these smaller section seals require stricter piston rod and cylinder bore tolerances. The range of dimensions is as follows: - cylinders of 25 mm to 200 mm; - rods of 12 mm to 140 mm. ISO 5597:2018 does not give details of seal design, since the manner of construction of seals varies with each manufacturer. The design and material of the seal and any incorporated anti-extrusion components are determined by conditions such as temperature and pressure. ISO 5597:2018 only applies to the dimensional criteria of products manufactured in conformity with this document; it does not apply to their functional characteristics. [1] 1 bar = 100 kPa = 105 Pa = 0,1 MPa; 1 Pa = 1 N/m2.

ISO 3601-2:2016 specifies the housing (gland) dimensions for class A O-rings for general industrial applications conforming to ISO 3601-1, as well as housing dimensions for class B O-rings used on selected metric-dimensioned hardware, e.g. fluid power cylinder bores and piston rods. These O-rings are for use in general hydraulic and pneumatic applications without and with anti-extrusion rings (back-up rings). The dimensions of the O-rings (d1 and d2), size codes (SC) and tolerances conform to ISO 3601-1. Housing dimensions for the O-rings intended for aerospace applications that are specified in ISO 3601-1 are addressed in Annex A.

ISO 3601-5:2015 contains the material specification of a selection of standard elastomeric materials (rubber) for O-rings used in general industrial applications. It also indicates the ability of the materials to satisfy many of the requirements associated with fluid power components. Only materials which are in universal usage are specified; other compounds are available and can be used. The required physical properties and test methods (including test specimen) should be agreed upon between equipment manufacturer/user and O-ring manufacturer/supplier.

ISO 10766:2014 specifies the preferred range of nominal dimensions and associated tolerances for a series of hydraulic cylinder piston and rod housings for rectangular-section-cut bearing rings, of the type shown in Clause 5, for applications in the following range of dimensions: for cylinders with bores of 16 mm to 500 mm, inclusive; for rods with diameters of 12 mm to 450 mm, inclusive. ISO 10766:2014 does not give details of cut bearing ring design, because the manner of construction of cut bearing rings varies with each manufacturer.

ISO 3601-1:2012 specifies the inside diameters, cross-sections, tolerances and designation codes for O-rings used in fluid power systems for general industrial and aerospace applications. The dimensions and tolerances specified in ISO 3601-1:2012 are suitable for any elastomeric material, provided that suitable tooling is available.

ISO 16589-2:2011 establishes the vocabulary for seals utilizing sealing elements manufactured from suitably formulated compounds, based on thermoplastic materials, such as polytetrafluoroethylene (PTFE) that are considered suitable for use under low-pressure conditions.

ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds, based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-3:2011 gives users of lip-type seals guidance on the careful storage and handling and proper installation of rotary shaft lip-type seals; attention is drawn to the hazards involved and ways of avoiding them are pointed out.

ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-4:2011 specifies general performance tests which can be used for seal qualification purposes. Materials quality control, dynamic testing, and supplementary low-temperature testing requirements are covered.

ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-5:2011 defines and classifies typical surface imperfections that could impair the function of the seals, and is intended as a convenience for purchasers and manufacturers in their discussions concerning the importance of these imperfections in different applications.

ISO 16589 specifies seals utilizing sealing elements manufactured from suitably formulated compounds based on thermoplastic materials, such as polytetrafluoroethylene (PTFE). They are considered suitable for use under low-pressure conditions. ISO 16589-1:2011 shows seal types and examples. It also specifies the nominal dimensions and tolerance of the seals, shafts and housings, as well as a dimensional identification code.

ISO 6194-3:2009 describes seals utilizing elastomeric sealing elements. They are considered suitable for use under low-pressure condition. ISO 6194-3:2009 gives users of lip-type seals requirements and guidance on the careful storage, handling and proper installation of rotary shaft lip-type seals; attention is drawn to the hazards involved and ways of avoiding them.

ISO 6194 describes seals utilizing elastomeric sealing elements. They are considered suitable for use under low-pressure conditions. ISO 6194-4:2009 specifies general test requirements for rotary-shaft lip-type seals. The tests may be used for qualification purposes.

ISO 3601-4:2008 specifies dimensions and tolerances for five types of anti-extrusion rings, which are also known as back-up rings: spiral type (T1); angle cut type (T2); solid type (T3); angle cut concave type (T4); solid concave type (T5). These anti-extrusion rings are for use with selected O-ring sizes as specified in ISO 3601-1 and the relevant housing dimensions specified in ISO 3601-2.

ISO 6194-5:2008 describes seals utilizing elastomeric sealing elements. They are normally considered suitable for use only at low pressures (see ISO 6194-1:2007, 6.1). ISO 6194-5:2008 defines and classifies typical surface imperfections that can impair the function of the seals and is intended as a convenience for purchasers and manufacturers in their discussions concerning the importance of these imperfections in different applications.

ISO 6194-1:2007 describes seals utilising elastomeric sealing elements. They are considered suitable for use under low-pressure conditions. ISO 6194-1:2007 shows seal types and examples. It also specifies the nominal dimensions and tolerances of the seals, shafts and housings, as well as a dimensional identification code.

ISO 3601-3:2005 lays down the quality acceptance criteria of O-rings used in fluid systems, the dimensions of which are standardized in ISO 3601-1, ISO 16031-1 and ISO 16031-2. ISO 3601-3:20051 also defines and classifies surface imperfections on O-rings and specifies maximum acceptable limits for these imperfections. ISO 3601-3:2005 is also applicable to O-rings to be used in aerospace construction.

This International Standard defines the test conditions and methods for assessing the performance of seals used in oil hydraulic reciprocating applications. The resulting specified characteristics may be published in manufacturer's literature to enable a direct comparison of seal performance. The seal under test may be a single seal or a combination seal package.

Establishes the dimensions and associated tolerances for a series of housings for piston seals. Specifies the dimensions for a range of seal housings of 25 to 500 mm. It applies to piston-heads that may either be assembled from a number of components or made in one piece. A figure shows an example of housing.

Specifies methods for measuring sealing devices having more than one seal in the set. Specifies methods for measuring stack height in order to determine that the sets are to an acceptable dimensional standard. Does not specify the dimensions for packing sets or their components. Describes three acceptable methods, and figure 1 shows a typical measuring device for the methods 1 and 2, the figures 3 and 4 show a typical setup for the methods 2 and 3, and figure 2 shows a typical device for the method 2.

ISO 6195:2013 specifies dimensions and tolerances of housings for wiper rings used in reciprocating rod applications for fluid power cylinders. The range of rod diameters is from 4 mm to 360 mm. ISO 6195:2013 is applicable to the following five housing designs. Type A: recessed housings with undercut or separate cover to retain elastomeric wipers. Type B: open recessed housings for wipers with integral rigid enforcement, that are press-fit in the housing. Type C: recessed housings with undercut to retain elastomeric wipers (these are the preferred housings for double lip wipers without integral rigid enforcement). Type D: recessed housings with undercut to retain elastomer-energized, plastic-faced wipers. Type E: recessed housings with undercut or separate cover to retain elastomeric wipers (these are the preferred housings for single lip wipers without integral rigid enforcement).

ISO 5597:2010 establishes the preferred range of nominal dimensions and associated tolerances for a series of hydraulic cylinder rod and piston seal housings for reciprocating applications in the following range of dimensions: cylinders 16 mm to 500 mm and rods 6 mm to 360 mm. An additional range of seal housings is detailed in ISO 5597:2010 to meet the reduced envelope requirements of the 160 bar (16 MPa) compact series of ISO 6020-2; these smaller section seals require stricter piston rod and cylinder bore tolerances. The range of dimensions are as follows: cylinders 25 mm to 200 mm and rods 12 mm to 140 mm. ISO 5597:2010 does not give details of seal design, since the manner of construction of seals varies with each manufacturer. The design and material of the seal and any incorporated anti-extrusion component are determined by conditions such as temperature and pressure. ISO 5597:2010 applies only to the dimensional criteria of products manufactured in conformity with ISO 5597:2010; it does not apply to their functional characteristics.

ISO 3601-1:2008 specifies the inside diameters, cross-sections, tolerances and designation codes for O-rings used in fluid power systems for general industrial and aerospace applications. The dimensions and tolerances specified in ISO 3601-1:2008 are suitable for any elastomeric material, provided that suitable tooling is available.

ISO 3601-2:2008 specifies the housing (gland) dimensions for class A O-rings for general industrial applications conforming to ISO 3601-1, as well as housing dimensions for class B O-rings used on selected metric-dimensioned hardware, e.g. fluid power cylinder bores and piston rods. These O-rings are for use in general hydraulic and pneumatic applications without and with anti-extrusion rings (back-up rings). The dimensions of the O-rings (d1 and d2), size codes (SC) and tolerances conform to ISO 3601-1. ISO 3601-2:2008 gives the housing dimensions for the O-rings intended for aerospace applications that are specified in ISO 3601-1.

ISO 10766:2006 specifies the preferred range of nominal dimensions and associated tolerances for a series of hydraulic cylinder piston and rod housings for rectangular-section-cut bearing rings, of the type shown in Figure 1, for applications in the following range of dimensions: for cylinders with bores of 16 mm to 500 mm, inclusive; for rods with diameters of 12 mm to 360 mm, inclusive. ISO 10766:2006 does not give details of cut bearing ring design, because the manner of construction of cut bearing rings varies with each manufacturer.The design material of cut bearing rings and any incorporated anti-extrusion component are determined by conditions such as temperature and pressure.

ISO 6195:2002 specifies dimensions and tolerances of housings for wiper rings used in reciprocating rod applications for fluid power cylinders. The range of rod diameters is from 4 mm to 360 mm. ISO 6195:2002 is applicable to the following four housing designs. Type A: recessed housings with undercut or separate cover to retain elastomeric wipers (these are the preferred housings for single lip wipers without integral rigid enforcement). Type B: open recessed housings for wipers with integral rigid enforcement, that are a press-fit in the housing. Type C: recessed housings with undercut to retain elastomeric wipers (these are the preferred housings for double lip wipers without integral rigid enforcement). Type D: recessed housings with undercut to retain elastomer-energized, plastic-faced wipers. ISO 6195:2002 does not otherwise specify the style, configurations, materials, or performance ratings for the wiper ring.

ISO 3601-1 specifies the inside diameters, cross-sections, tolerances and size identification code for 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 ISO 3601-1 are suitable for any elastomeric material, provided that suitable tooling is available.

ISO 3601-5 evaluates the suitability of a number of elastomeric materials (rubber) which may be used for O-rings in industrial applications. It also indicates the ability of the materials to satisfy many of the requirements associated with fluid power components and systems and includes temperatures and fluid compatibility. Only materials which are in universal usage are specified, other compounds are available and can be specified.

Specifies the preferred range of nominal dimensions and associated tolerances for a series of hydraulic cylinder piston and rod housings for rectangular-section-cut bearing rings. Does not give any details of bearing ring design.

Gives technical terms and definitions in English and French, and gives the equivalent terms in German, Italian, Japanese, Russian and Swedish.

This part shows and identifies visual imperfections on typical rotary shaft lip type seals, dimensionally standardized in ISO 6194-1, as a convenience for purchasers and manufacturers in their discussions about the importance of imperfections in different applications. It defines and classifies typical surface imperfections that often impair the function of the rotary shaft lip type seal.

This part specifies the dimensions and associated tolerances for a series of housings to accomodate seals used in reciprocating applications. Does not stipulate details of seal design. This part applies only to the dimensional characteristics of products. Does not apply to their functional characteristics. Figure 1 contains an example of housing. Table 2 covers dimensions and tolerances of housings for rod diameters from 6 to 360 mm.

The dimensions and tolerances specified in this part of ISO 3601 are suitable for any elastomeric material provided the suitable tooling is available. The figure shows the typical O-ring configuration. Table 2 contains the series G (general purpose applications), and table 3 the series A (aerospace applications). This second edition cancels and replaces the first edition (1978).

This part specifies the dimensions and associated tolerances for a series of housings to accomodate seals used in reciprocating applications. Does not stipulate details of seal design. This part applies only to the dimensional characteristics of products. Does not apply to their functional characteristics. Figure 1 contains an example of housing. Table 2 covers dimensions and tolerances of housings for bore diameters from 16 to 500 mm.

This part gives lip seal users a guidance; attention is drawn to the hazards involved (temperature, ozone, humidity, radioactive materials, fumes, insects, rodents, dust, grit, mechanical damage) and ways of avoiding them are pointed out. The installation of the various types of seals by means of an installation tool is described and illustrated (figures 1 to 6).

Establishes the preferred range of nominal dimensions and associated tolerances for a series of housings as follows: for cylinders of 16 to 500 mm; for rods of 6 to 360 mm. For the compact series of ISO 6020-2 the ranges of dimensions are as follows: for cylinders of 25 to 200 mm; for rods of 12 to 140 mm. Does not give details of seal design. Applies to the dimensional criteria of products; does not apply to their functional characteristics.