... tightness,30min,≥Mpa0.30.20.33Heat resistance degree,°C,no glide, no flow, no drop90105901054Tension,N/50mmLongitudinal450800350500transverse2503005Elongation at break,≥Longitudinal30%40 ... strength,≥Longitudinal250N350N250N350Ntransverse170N200N8Manual work and climate quicken agingAppearanceNo.1 degree(no glide, no flow, no drop)Longitudinal tensionkeeping rate,≥80Brittleness point-10 ...