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JIS K 6258

is a Japanese Industrial Standard that specifies test methods for determining the effect of liquids on vulcanized or thermoplastic rubber. This standard is essential for engineers and manufacturers who need to evaluate how rubber components—such as seals, hoses, and gaskets—perform when exposed to oils, fuels, and chemicals. Scope and Purpose

How to Obtain JIS K 6258 English PDF

Official Title:

Rubber, vulcanized or thermoplastic - Determination of the effect of liquids. jis k 6258 english pdf exclusive

• [ ] Test specimen dimensions: 20mm x 20mm x 2mm (or as per ISO 23529)
• [ ] Liquid volume ratio: Minimum 20x the specimen volume.
• [ ] Immersion duration: 22h, 70h, or 168h at specified temp.
• [ ] Wiping procedure: Filter paper with 30 ± 5 kPa pressure.
• [ ] Calculation of V% (Volume change) using the buoyancy method.

Introduction

Understanding JIS K 6258: The Standard for Rubber Liquid Resistance JIS K 6258 is a Japanese Industrial Standard

• Introduction
• Scope
• Definitions
• Test apparatus
• Test procedure
• Test report
• Annexes

One-Surface Immersion

: In cases where only one side of a component (like a liner) is exposed to a liquid, this specialized test measures the mass change per unit of surface area. Industrial Significance [ ] Test specimen dimensions: 20mm x 20mm

Immersion

: Samples are fully submerged in a container large enough to allow the liquid to contact all surfaces freely.