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Your Instron or Zwick machine must comply with Class 1 requirements of ISO 5893 (Tensile-testing machines). The PDF references this external standard heavily.

Sealants are chemically reactive materials (usually silicone-based). ISO 8339 mandates specific curing times and conditions (temperature and humidity) before testing can begin. This ensures the material has reached its full mechanical potential.

: Ensuring sealants can withstand the physical stresses of moving building joints.

ISO 8339: Determining Tensile Properties of Sealants is a critical international standard used in the building construction industry to measure the tensile properties of joint sealants . Specifically, it defines a method for determining the tensile strength elongation adhesion/cohesion characteristics of sealants used in joints. What Does ISO 8339 Cover?

I notice you're looking for an , which refers to the international standard ISO 8339:1984 — Building construction — Jointing products — Determination of tensile properties (sealants for building joints).