ges of size for standard 1三號標準油體積變化 changes of size for standard 3%%13~50~15脆性溫度 fragility℃≤-25Ⅲ、主要技術指標：各類橡膠的耐熱性：耐熱等級 grade膠 種 type70℃天然橡膠、異戍二烯、丁苯膠、順丁膠 natural,dissimil diproplene,butabenze,butane100℃氯丁膠、聚硫膠 clorobutane，polysulphride150℃丁睛膠、丁基膠、三元乙丙膠、氯磺化聚乙烯、氯乙醇膠 butane,butapropy,triethypropyl,clorosulphripolyethyl,cloriethanol175℃丙烯酸酯橡膠propylester rubber200~300℃氟橡膠、硅橡膠 floride rubber,silico