Sealing Devices
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Technical committeeTypeAcronymISO 7986CommitteePublished year1997Description
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.
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Technical committeeTypeAcronymISO 7425-2CommitteePublished year2021Description
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.
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Technical committeeTypeAcronymISO 7425-1CommitteePublished year2021Description
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.
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Technical committeeTypeAcronymISO 6547CommitteePublished year1981Description
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.
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Technical committeeTypeAcronymISO 5597CommitteePublished year2018Description
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.
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Technical committeeTypeAcronymISO 10766CommitteePublished year2014Description
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.Technology