ISO 1817:2022

Overview

ISO 1817:2022 - Rubber, vulcanized or thermoplastic - Determination of the effect of liquids specifies standardized laboratory methods to evaluate how liquids affect vulcanized and thermoplastic rubbers. The standard covers immersion-based tests using a range of test liquids (petroleum derivatives, organic solvents, chemical reagents and reference fluids) and quantifies changes in physical properties before and after exposure. ISO 1817:2022 defines five testing methods (A–E) and associated apparatus, calibration, reporting and precision requirements.

Key topics and technical requirements

• Test scope: Measures resistance of rubber to liquid action by comparing properties before and after immersion and after drying where applicable.
• Measured properties:
  • Change in mass, volume and dimensions
  • Extractable matter (loss of soluble constituents)
  • Change in hardness and tensile stress–strain properties
• Test methods and apparatus:
  • Method A: glass vessel with lid (large liquid:test-piece ratio)
  • Method B: glass vessel with stopper (minimise evaporation/air ingress)
  • Method C: glass vessel with reflux condenser (volatile liquids near boiling point)
  • Method D: pressure vessel (tests above boiling point or under overpressure; use with flammable liquids)
  • Method E: apparatus for testing one surface only
• Key conditions: prescribed liquid-to-test-piece volume ratios, control of air above liquid, temperature and immersion duration, inert hanger materials, and prohibitions on stirring (except Method C).
• Calibration and precision: references to calibration procedures and precision data; requirements for test reporting and documentation.
• Safety and environmental notes: users are responsible for safe handling, disposal and local safety measures for hazardous liquids and generated waste.

Practical applications and who uses this standard

ISO 1817:2022 is used for:

• Material selection and R&D - comparing rubber compounds for oil, fuel and solvent resistance.
• Quality control - routine verification of rubber components (seals, hoses, gaskets, O‑rings) against expected fluid exposure.
• Failure analysis - assessing extraction or swelling effects that may have contributed to service degradation.
• Compliance and procurement - specifying liquid compatibility requirements for OEMs and suppliers in automotive, oil & gas, hydraulic systems, chemical processing and industrial equipment.

Typical users: rubber manufacturers, independent test laboratories, materials engineers, product designers, OEM quality teams and procurement specialists.

Related standards

• ISO 37 - Tensile stress–strain properties of rubber
• ISO 48-2 - Hardness testing (IRHD)
• ISO 23529 - Preparation and conditioning of rubber test pieces
• ISO 18899 - Calibration of test equipment
• ASTM D5964 - Replacement oils practice (referenced for some oil replacements)

Note: ISO 1817:2022 provides controlled laboratory measures of liquid action on rubber; results help assess suitability but do not guarantee identical in-service behaviour because factors like stress, thickness and oxygen exposure can influence real-world performance.