ISO 3601-5-2015 pdf free.Fluid power systems一O-rings一 Part 5: Specification of elastomeric materials for industrial applications.
This part of ISO 3601 contains the material specification of a selection of standard elastomeric materials (rubber) for 0-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 0-ring manufacturer/supplier.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 48, Rubber, vulcanized or thermoplastic — Determination of hardness (hardness between 10 IRHD and 100 IRHD)
ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 8 15:1, Rubber, vulcanized or thermoplastic — Determination of compression set — Part 1: At ambient or elevated temperatures
ISO 1382, Rubber — Vocabulary
ISO 1629, Rubber and latices — Nomenclature
ISO 1817, Rubber, vulcanized — Determination of the effect of liquids
ISO 2921, Rubber, vulcanized — Determination of low-temperature retraction (TR test)
ISO 360 1-1, Fluid power systems — 0-rings — Part 1: Inside diameters, cross-sections, tolerances and designation codes
ISO 5598. Fluid power systems and components — Vocabulary
ASTM D1414, Standard Test Methods for Rubber 0-Rings
3 Terms, definitions, and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3601-1, ISO 1382, and ISO 5598 apply.
4 Materials
4.1 Commonly used elastomeric materials
Table 1 gives a selection of elastomeric materials commonly used for O-rings in general industrial applications.
4.2 Curing systems
An important process in moulding operations to make 0-rings is vulcanization. Vulcanization is a chemical process for converting rubber or related polymers into more durable and, in case of elastomers, more elastic materials through the addition of sulfur or other equivalent “curatives.’ These additives modify the polymer by forming crosslinks between individual polymer chains.
The curing system used depends on the polymer type and the desired properties. Two of the most widely and often used systems are sulfur (S) and peroxide (P) curing systems.
NOTE Not all curing systems are suitable for all elastomers.
4.3 0-ring requirements
The 0-ring requirements of the basic elastomers according to Table 1 are specified in Table 2. This table can be used for the inspection of production parts, incoming goods, or in case of complaints.ISO 3601-5 pdf free download.