ItemTypical value / Test basis
MaterialSilicone rubber / EPDM / ——
HydrophobicityExcellent / Excellent / ——
Protection ratingIP67 / IP67 / IEC60529
UV resistanceGrey scale rating 3-4 / Grey scale rating 4 / ASTM G154
Ozone resistanceNo cracking / No cracking / GB/T7762
Anti-mold effectGrade 0 / —— / GB/T2423.16
Hardness Shore A43 / 38 / GB/T531
Tensile strength MPa7.5 / 8 / GB/T528
Elongation at break %700 / 700 / GB/T528
Tear strength kN/m30 / 30 / GB/T529
Volume resistivity Ω·cm1×10^15 / 1×10^15 / GB/T1410
Service environmentIndoor, outdoor / Indoor, outdoor / ——
Ambient temperature-60~90℃ / -60~90℃ / ——
Storage time2 years / 2 years / ——
Service life30 years / 30 years / ——
Test itemTest conditions and method / Reference standard
Waterproof ratingWater depth 1 m, immersion for 0.5 h. Requirement: no water ingress into the cold shrink tube / IEC60529
UV radiation exposureTest cycle: ASTM G154-16 Cycle 1 / ASTM G154-16
Ozone agingElongation: 20%, pretreatment temperature (23±2) °C, pretreatment time 72 h, test temperature 40±2 °C, ozone concentration (200±20)×10^-8 (V/V), exposure time 72 h. After the test, there shall be no cracks, damage, or obvious deformation. / GB/T 7762-2014
Mold testReference GB/T 2423.16-2008 Environmental testing for electric and electronic products Part 2: Test J - Mold growth. Passed the test, mold growth degree Grade 0. Does not affect waterproof performance. (Grade 0 mold growth: no obvious mold growth under 50x magnification.) / GB/T2423.16-2008