石墨环分为柔性石墨和碳-石墨环。碳-石墨环主要用在机械旋转部位的密封。碳-石墨环具有耐高温 耐腐蚀 耐磨损的特性。
石墨环性能与特点：
1、石墨环自润滑性好
2、石墨环回弹系数高
3、石(shi)墨(mo)(mo)环可以(yi)根(gen)据用(yong)户需要，按45°斜切口它被(bei)用(yong)作耐火(huo)材料。由于碳和(he)石(shi)墨(mo)(mo)环能耐高温(wen)，具有良好(hao)的(de)高温(wen)强度和(he)耐腐(fu)蚀性(xing)，所以(yi)许多冶金(jin)(jin)炉(lu)内(nei)衬都可以(yi)用(yong)碳块砌筑(zhu)，如(ru)炼铁(tie)炉(lu)的(de)炉(lu)底、炉(lu)缸和(he)炉(lu)腹，铁(tie)合金(jin)(jin)炉(lu)和(he)电(dian)石(shi)炉(lu)的(de)内(nei)衬，铝电(dian)解槽的(de)底部(bu)和(he)侧(ce)部(bu)。许多用(yong)于熔炼贵金(jin)(jin)属和(he)稀有金(jin)(jin)属的(de)坩(gan)埚以(yi)及(ji)用(yong)于熔化应时玻(bo)璃的(de)石(shi)墨(mo)(mo)化坩(gan)埚也由石(shi)墨(mo)(mo)化坯料制(zhi)成。

用作耐火材料的碳和石墨环不应在氧化气氛中使用。因为，这意味着碳或石墨在氧化气氛的高温下被迅速烧蚀。
2.它被用作耐(nai)腐(fu)蚀的结构材(cai)料。浸(jin)渍有(you)机树脂或无机树脂的石墨化(hua)(hua)电(dian)极具(ju)有(you)良好(hao)的耐(nai)腐(fu)蚀性、良好(hao)的导(dao)热性和低(di)渗透(tou)性。这种(zhong)浸(jin)渍石墨也(ye)被称为不(bu)渗透(tou)石墨。广泛用于制(zhi)造各种(zhong)换(huan)热器(qi)、反应罐(guan)、冷凝器(qi)、燃烧塔、吸(xi)收塔、冷却器(qi)、加热器(qi)、过(guo)滤(lv)器(qi)、泵等设备，广泛应用于石油(you)炼制(zhi)、石油(you)化(hua)(hua)工(gong)、湿法冶金、酸碱(jian)生产、合成(cheng)纤(xian)维、造纸等工(gong)业(ye)部门。可以(yi)节省大量的不(bu)锈钢等金属材(cai)料。不(bu)渗透(tou)石墨生产已成(cheng)为炭素工(gong)业(ye)的一个重(zhong)要(yao)分(fen)支(zhi)。

3.用(yong)作(zuo)导(dao)电(dian)(dian)(dian)(dian)(dian)(dian)材(cai)料(liao)。用(yong)电(dian)(dian)(dian)(dian)(dian)(dian)弧炉(lu)(lu)或(huo)矿(kuang)热电(dian)(dian)(dian)(dian)(dian)(dian)炉(lu)(lu)冶炼各种合金钢、铁合金或(huo)生(sheng)产(chan)电(dian)(dian)(dian)(dian)(dian)(dian)石(shi)、黄磷时，通过碳(tan)素电(dian)(dian)(dian)(dian)(dian)(dian)极(ji)或(huo)石(shi)墨(mo)化(hua)电(dian)(dian)(dian)(dian)(dian)(dian)极(ji)向(xiang)电(dian)(dian)(dian)(dian)(dian)(dian)炉(lu)(lu)冶炼区通入强电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)，产(chan)生(sheng)电(dian)(dian)(dian)(dian)(dian)(dian)弧，将电(dian)(dian)(dian)(dian)(dian)(dian)能转(zhuan)化(hua)为(wei)热能，使温(wen)度升高到(dao)2000摄(she)氏度左右，从(cong)而(er)满足冶炼或(huo)反应的要求。镁、铝和(he)钠通常通过熔盐(yan)(yan)电(dian)(dian)(dian)(dian)(dian)(dian)解来(lai)生(sheng)产(chan)。此时，石(shi)墨(mo)化(hua)电(dian)(dian)(dian)(dian)(dian)(dian)极(ji)或(huo)连续自焙电(dian)(dian)(dian)(dian)(dian)(dian)极(ji)被用(yong)作(zuo)电(dian)(dian)(dian)(dian)(dian)(dian)解池的阳极(ji)导(dao)电(dian)(dian)(dian)(dian)(dian)(dian)材(cai)料(liao)。熔盐(yan)(yan)电(dian)(dian)(dian)(dian)(dian)(dian)解的温(wen)度一(yi)般(ban)在1000摄(she)氏度以(yi)下。通常，石(shi)墨(mo)化(hua)阳极(ji)被用(yong)作(zuo)生(sheng)产(chan)苛性(xing)钠和(he)氯的盐(yan)(yan)溶液(ye)电(dian)(dian)(dian)(dian)(dian)(dian)解槽的阳极(ji)导(dao)电(dian)(dian)(dian)(dian)(dian)(dian)材(cai)料(liao)。石(shi)墨(mo)电(dian)(dian)(dian)(dian)(dian)(dian)极(ji)也用(yong)作(zuo)生(sheng)产(chan)金刚砂(sha)的电(dian)(dian)(dian)(dian)(dian)(dian)阻炉(lu)(lu)的炉(lu)(lu)头导(dao)电(dian)(dian)(dian)(dian)(dian)(dian)材(cai)料(liao)。