O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)的(de)(de)(de)(de)材(cai)料(liao)主(zhu)要(yao)有丁(ding)氰橡(xiang)膠NBR和氟(fu)橡(xiang)膠FKM，氟(fu)橡(xiang)膠更適用于(yu)高溫工況。除材(cai)料(liao)之外(wai)(wai)，O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)很重要(yao)的(de)(de)(de)(de)一(yi)個指標的(de)(de)(de)(de)是它(ta)的(de)(de)(de)(de)硬(ying)度(du)(du)，一(yi)般(ban)采用邵氏(shi)硬(ying)度(du)(du)來表示，從60到90左右(you)不等，數(shu)值越(yue)大(da)表示硬(ying)度(du)(du)越(yue)高。在(zai)同樣(yang)壓力(li)下，硬(ying)度(du)(du)越(yue)高，防擠出（變形甚(shen)至(zhi)撕裂）的(de)(de)(de)(de)能力(li)就越(yue)強(qiang)。因此(ci)，應(ying)選用硬(ying)度(du)(du)較高的(de)(de)(de)(de)O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)。O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)的(de)(de)(de)(de)溝槽(cao)設(she)計(ji)有相關的(de)(de)(de)(de)國家(jia)(jia)標準，主(zhu)要(yao)分動(dong)密封、軸向(xiang)靜密封和徑(jing)向(xiang)靜密封三種。法蘭(lan)、箱(xiang)蓋等的(de)(de)(de)(de)O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)采用軸向(xiang)壓緊更便(bian)于(yu)裝配和保(bao)證密封性能。另外(wai)(wai)，我(wo)國國家(jia)(jia)標準中的(de)(de)(de)(de)溝槽(cao)尺寸(cun)標準已(yi)顯落(luo)后(hou)，如國家(jia)(jia)標準中受內壓的(de)(de)(de)(de)O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)溝槽(cao)外(wai)(wai)徑(jing)等于(yu)O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)外(wai)(wai)徑(jing)，而PARKER法蘭(lan)接頭的(de)(de)(de)(de)O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)溝槽(cao)外(wai)(wai)徑(jing)小于(yu)O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)外(wai)(wai)徑(jing)。設(she)計(ji)時應(ying)適當參考國外(wai)(wai)標準。無(wu)錫鼎正新材(cai)料(liao)致(zhi)力(li)于(yu)提供專(zhuan)業的(de)(de)(de)(de)O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)，期待您(nin)的(de)(de)(de)(de)光臨(lin)！聊城(cheng)丁(ding)氰橡(xiang)膠O型(xing)(xing)(xing)(xing)(xing)圈(quan)(quan)(quan)型(xing)(xing)(xing)(xing)(xing)號

墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)選(xuan)用(yong)(yong)(yong)(yong)：1.、在選(xuan)用(yong)(yong)(yong)(yong)墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)尺寸時，應(ying)注(zhu)意保證非(fei)金屬(shu)平墊(dian)(dian)(dian)(dian)墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)內(nei)徑或(huo)纏繞(rao)墊(dian)(dian)(dian)(dian)內(nei)環(huan)內(nei)徑不(bu)(bu)得低于(yu)法蘭(lan)內(nei)徑，如使(shi)用(yong)(yong)(yong)(yong)上(shang)要(yao)(yao)求(qiu)墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)（或(huo)內(nei)環(huan)）內(nei)徑與法蘭(lan)內(nei)徑齊(qi)平時，應(ying)向墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)制造廠提(ti)供(gong)法相應(ying)的(de)法蘭(lan)內(nei)徑作為墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)內(nei)徑，但(dan)(dan)應(ying)保證墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)足夠的(de)承(cheng)壓(ya)寬(kuan)度(du)。2.、對溫度(du)、壓(ya)力(li)有變(bian)化的(de)場(chang)合(he)(he)(he)或(huo)存在振動(dong)、沖擊的(de)場(chang)合(he)(he)(he)應(ying)采用(yong)(yong)(yong)(yong)具有良好回彈特性的(de)墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)，如波齒復合(he)(he)(he)墊(dian)(dian)(dian)(dian)或(huo)纏繞(rao)式墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)（帶內(nei)、外(wai)環(huan)）。3.、石棉(mian)橡膠板(ban)墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)：建議一般(ban)只應(ying)用(yong)(yong)(yong)(yong)于(yu)溫度(du)、壓(ya)力(li)不(bu)(bu)高(gao)的(de)非(fei)重要(yao)(yao)設(she)備場(chang)合(he)(he)(he)，石棉(mian)橡膠作為墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)應(ying)綜合(he)(he)(he)考慮，謹(jin)慎選(xuan)用(yong)(yong)(yong)(yong)。石棉(mian)墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)不(bu)(bu)應(ying)用(yong)(yong)(yong)(yong)于(yu)極度(du)或(huo)高(gao)度(du)危害介(jie)質和高(gao)真空密(mi)封場(chang)合(he)(he)(he)。管道用(yong)(yong)(yong)(yong)石棉(mian)墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)的(de)厚(hou)度(du)一般(ban)為1.5～3mm，薄(bo)墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)使(shi)用(yong)(yong)(yong)(yong)壓(ya)力(li)高(gao)，但(dan)(dan)需要(yao)(yao)密(mi)封壓(ya)力(li)大，厚(hou)墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)的(de)回彈性優于(yu)薄(bo)墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)，比較容易密(mi)封，墊(dian)(dian)(dian)(dian)片(pian)(pian)(pian)(pian)(pian)(pian)(pian)比壓(ya)力(li)值亦較低，但(dan)(dan)厚(hou)度(du)超過3mm，對泄(xie)漏率變(bian)化不(bu)(bu)大，且壓(ya)力(li)較高(gao)時易擠出。汕尾陶(tao)瓷O型(xing)圈無錫鼎正新材料為您提(ti)供(gong)專業的(de)O型(xing)圈，期待您的(de)光臨！

聚(ju)(ju)(ju)四(si)氟(fu)(fu)乙(yi)烯墊片(pian)(pian)：聚(ju)(ju)(ju)四(si)氟(fu)(fu)乙(yi)烯墊片(pian)(pian)具有(you)能(neng)耐(nai)包(bao)括酸(suan)，堿，溶劑等各種化(hua)學介質的腐蝕(shi)，而且(qie)具有(you)潔凈不污染(ran)等特點，純聚(ju)(ju)(ju)四(si)氟(fu)(fu)乙(yi)烯墊片(pian)(pian)因(yin)其(qi)(qi)具有(you)冷流性能(neng)和熱(re)蠕(ru)變(bian)特點，其(qi)(qi)使(shi)用(yong)壓力一般(ban)不大(da)于4.0MPa，使(shi)用(yong)溫(wen)度(du)一般(ban)不超(chao)過(guo)150℃。其(qi)(qi)密(mi)封面(mian)型式宜采用(yong)全平(ping)面(mian)、凹面(mian)、凸面(mian)或榫面(mian)、槽面(mian)。但聚(ju)(ju)(ju)四(si)氟(fu)(fu)乙(yi)烯包(bao)覆(fu)墊片(pian)(pian)能(neng)克服一般(ban)聚(ju)(ju)(ju)四(si)氟(fu)(fu)乙(yi)烯墊片(pian)(pian)無彈(dan)性、易冷流的缺(que)點，因(yin)而性能(neng)更好。聚(ju)(ju)(ju)四(si)氟(fu)(fu)乙(yi)烯包(bao)覆(fu)墊片(pian)(pian)不應用(yong)于真空或其(qi)(qi)嵌入層材料易被(bei)介質腐蝕(shi)的場合(he)。一般(ban)采用(yong)PMF型、PMS型對(dui)減(jian)少(shao)管內液體滯(zhi)留有(you)利(li)，PFT型用(yong)于公稱尺寸大(da)于或等于DN350的場合(he)。

O型(xing)(xing)(xing)圈(quan)在(zai)多種液壓(ya)、氣動件管(guan)接(jie)頭、圓筒面及(ji)法(fa)蘭面等結合處(chu)被普遍使用(yong)(yong)(yong)。對(dui)于(yu)在(zai)運動過(guo)程中使用(yong)(yong)(yong)的O型(xing)(xing)(xing)圈(quan)，當工作壓(ya)力(li)(li)大于(yu)9.8Mpa時，如單向(xiang)受(shou)壓(ya)，就(jiu)在(zai)O型(xing)(xing)(xing)圈(quan)受(shou)壓(ya)力(li)(li)方(fang)向(xiang)的另一側設置一個擋(dang)(dang)(dang)(dang)圈(quan)；如雙向(xiang)受(shou)壓(ya)，則在(zai)O型(xing)(xing)(xing)圈(quan)兩側各(ge)放一個擋(dang)(dang)(dang)(dang)圈(quan)。為了(le)減(jian)小摩擦(ca)力(li)(li)，也可采(cai)用(yong)(yong)(yong)楔型(xing)(xing)(xing)擋(dang)(dang)(dang)(dang)圈(quan)。當壓(ya)力(li)(li)液體從左(zuo)方(fang)施加(jia)作用(yong)(yong)(yong)時，右方(fang)擋(dang)(dang)(dang)(dang)圈(quan)被推起，左(zuo)方(fang)擋(dang)(dang)(dang)(dang)圈(quan)不與被密(mi)封表面接(jie)觸，因此摩擦(ca)力(li)(li)減(jian)小。總的來(lai)說，采(cai)用(yong)(yong)(yong)擋(dang)(dang)(dang)(dang)圈(quan)會增大密(mi)封裝置的摩擦(ca)力(li)(li)，而楔型(xing)(xing)(xing)擋(dang)(dang)(dang)(dang)圈(quan)對(dui)減(jian)小這種摩擦(ca)力(li)(li)具有(you)十(shi)分重要的意義(yi)。對(dui)于(yu)固定用(yong)(yong)(yong)的O型(xing)(xing)(xing)圈(quan)，當工作壓(ya)力(li)(li)大于(yu)32Mpa時，也需要使用(yong)(yong)(yong)擋(dang)(dang)(dang)(dang)圈(quan)。無(wu)錫鼎(ding)正新(xin)材料致力(li)(li)于(yu)提供專業的O型(xing)(xing)(xing)圈(quan)，歡迎新(xin)老客戶來(lai)電！

幾大(da)類(lei)墊片(pian)的(de)(de)(de)(de)(de)選用(yong)解析：聚四氟(fu)乙(yi)烯在受壓(ya)(ya)及(ji)高(gao)溫下(xia)易(yi)冷流及(ji)蠕變，故一般用(yong)于(yu)(yu)低壓(ya)(ya)、中溫、強腐蝕(shi)以及(ji)不允許污染的(de)(de)(de)(de)(de)介(jie)質(zhi)，如(ru)強酸(suan)、強堿(jian)、鹵素、藥品等。安全使(shi)(shi)用(yong)溫度在150℃，壓(ya)(ya)力(li)1MPa以下(xia)。填充(chong)聚四氟(fu)乙(yi)烯雖然強度高(gao)些，但使(shi)(shi)用(yong)溫度也不超(chao)過(guo)200℃，且耐(nai)腐蝕(shi)能力(li)下(xia)降。聚四氟(fu)乙(yi)烯包墊較(jiao)高(gao)使(shi)(shi)用(yong)壓(ya)(ya)力(li)一般不超(chao)過(guo)2MPa。由于(yu)(yu)溫度升高(gao)，材料(liao)發(fa)生(sheng)(sheng)蠕變，致(zhi)使(shi)(shi)密封壓(ya)(ya)力(li)明顯下(xia)降。即使(shi)(shi)不升溫，隨著時間的(de)(de)(de)(de)(de)延長，密封面的(de)(de)(de)(de)(de)壓(ya)(ya)緊(jin)(jin)應(ying)(ying)力(li)也會下(xia)降，產(chan)生(sheng)(sheng)“應(ying)(ying)力(li)松弛現(xian)象(xiang)(xiang)。該現(xian)象(xiang)(xiang)在各種墊片(pian)中都會產(chan)生(sheng)(sheng)，只是聚四氟(fu)乙(yi)烯墊的(de)(de)(de)(de)(de)應(ying)(ying)力(li)松弛現(xian)象(xiang)(xiang)較(jiao)為嚴重，應(ying)(ying)予注(zhu)意。聚四氟(fu)乙(yi)烯的(de)(de)(de)(de)(de)摩擦系數較(jiao)小(壓(ya)(ya)緊(jin)(jin)應(ying)(ying)力(li)大(da)于(yu)(yu)4MPa，摩擦系數為0.035~0.04)，預緊(jin)(jin)時墊片(pian)易(yi)向外(wai)滑移，所以較(jiao)好采用(yong)凹凸(tu)式法蘭(lan)面。當(dang)采用(yong)平面法蘭(lan)時，可將墊片(pian)外(wai)徑(jing)接觸螺栓(shuan)，利用(yong)螺栓(shuan)阻止墊片(pian)外(wai)滑。徐州(zhou)密封件O型圈，請聯系無錫鼎正新材購買。汕尾陶瓷O型圈

無錫鼎正新材料是一家(jia)專業提供(gong)O型(xing)圈的公(gong)司，有想法的不要錯過(guo)哦！聊城(cheng)丁(ding)氰(qing)橡膠O型(xing)圈型(xing)號

橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)密(mi)(mi)封(feng)圈材質種類及(ji)O型(xing)圈配(pei)方設計：1.SIL硅(gui)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)密(mi)(mi)封(feng)圈：具(ju)有(you)(you)較佳(jia)的(de)耐熱、耐寒、耐臭氧(yang)、耐大氣老(lao)化(hua)(hua)性能。有(you)(you)很好(hao)的(de)絕(jue)緣性能。但抗拉強(qiang)度較一般(ban)(ban)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)差且不(bu)具(ju)耐油(you)性。適(shi)用(yong)于(yu)家用(yong)電器(qi)(qi)如電熱水(shui)器(qi)(qi)、電熨斗(dou)、微波爐等。還適(shi)用(yong)于(yu)各種與人(ren)體有(you)(you)接觸(chu)的(de)用(yong)品，如水(shui)壺、飲(yin)水(shui)機等。不(bu)建議使(shi)用(yong)于(yu)大部(bu)份濃縮(suo)溶劑、油(you)品、濃酸及(ji)氫氧(yang)化(hua)(hua)鈉中。一般(ban)(ban)使(shi)用(yong)溫(wen)度范圍為(wei)－55～250℃。2.VITON氟素橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)密(mi)(mi)封(feng)圈：耐高溫(wen)性優于(yu)硅(gui)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)，有(you)(you)較佳(jia)的(de)耐候(hou)性、耐臭氧(yang)性和(he)耐化(hua)(hua)學性，耐寒性則不(bu)良。對于(yu)大部(bu)份油(you)品及(ji)溶劑都(dou)具(ju)有(you)(you)抵(di)抗能力，尤其是酸類、脂族烴、芳香烴及(ji)動(dong)植物油(you)。適(shi)用(yong)于(yu)柴油(you)發動(dong)機、燃(ran)料系統及(ji)化(hua)(hua)工廠的(de)密(mi)(mi)封(feng)需求。不(bu)建議使(shi)用(yong)于(yu)酮(tong)類、低(di)分子量的(de)酯類及(ji)含硝的(de)混合物。一般(ban)(ban)使(shi)用(yong)溫(wen)度范圍為(wei)－20～250℃。聊城丁(ding)氰橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)O型(xing)圈型(xing)號

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