8.1 Compression Set
8.2 Extrusion & Nibbling
8.3 Abrasion
8.4 Heat Hardening & Oxidation
8.5 Installation Damage
8.6 Plasticizer Extraction
8.7 Excessive Swell
8.8 Spiral Failure
8.9 Weather or Ozone Cracking
8.10 Failure Without Evidence
8.11 Explosive Decompression
