o 型橡胶密封圈国家标准.pdf

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1、标准名称标准号G51―2共12页O型橡胶代替号G51―9第1页G类密封圈根据GB/T1235-1976图册53页本标准适用于装在各种机械设备上，在规定的温度压力以及不同的液体和气体介质中，于静止或运动状态下起密封作用的密封圈。注：本标准仅用于老产品维修。1．O型橡胶密封圈尺寸见图1和表1图1D1=30do=3.5耐油通用胶料I-2标记：30×3.5；I–2G51-2表1公称公称实际内径公称公称实际内径断面直径断面直径外径内径外径内径d1偏差dod1偏差doD1dD1d521.7◣383331.5632.7◣403534.5743.7◣454039.5±0.20854.7

2、◣504544.5965.7＋０．１０◣555049.5±0.121.9－０．０８1076.7◣605554.51187.7◣635857.51298.7◣656059.513109.7◣686362.5(14)1110.7◣706564.514109.6◣757069.5151110.6◣807574.5±0.40＋０．１２3.1161211.6◣858079.5－０．１０181413.6◣908584.5191514.6＋０．１１◣959089.5±0.132.4－０．０９201615.6◣1009594.5221817.6◣10510099.5242019.6◣1

3、10105104.5252120.6◣115110109.5262221.6◣120115114.5◣282322.5◣125120119.5±0.50◣302524.5＋０．１２◣130125124.5±0.203.1－０．１０◣322726.5◣135130129.5◣353029.5◣140135134.5编制：侯剑锋批准：版次/日期：Ⅰ/2008.01审核：实施日期：2008.07.01标准名称标准号G51―2共12页O型橡胶代替号G51―9第2页G类密封圈根据GB/T1235-1976图册54页表1(续)公称公称实际内径公称公称实际内径断面直径断面直径外径内径

4、外径内径d1偏差dod1偏差doD1dD1d◣145140139.5155145144.4◣150145144.5160150149.4±0.50＋０．１２◣155150149.5±0.503.1－０．１０165155154.3◣160155154.5◣170160159.3◣165160159.5◣175165164.3282221.6◣180170169.3302423.6◣185175174.3312524.6◣190180179.3322625.6◣195185184.3342827.6◣200190189.3±0.80＋０．１６352928.6◣2051951

5、94.35.7－０．１４363029.6◣210200199.3383231.6◣220210209.3403433.6◣230220219.3413534.6±0.20＋０．１３◣240230229.33.5423635.6－０．１１◣250240239.3443837.6◣260250249.3453938.6◣270260259.3464039.6◣280270269.3±1.0484241.6◣290280279.3504443.6◣300290289.3514544.6170155154.1544847.6175160159.1554948.618016516

6、4.1565049.6185170169.1(50)4039.4190175174.1(55)4544.4195180179.1605049.4200185184.1635352.4205190189.1655554.4210195194.1±0.80706059.4215200199.1736362.4220205204.1756564.4225210209.1±0.40807069.4230215214.1＋０．１８857574.4235220219.18.6－０．１６908079.4240225224.1＋０．１６958584.45.7245230229.1－０．

7、１４1009089.4250235234.11059594.4255240239.111010099.4260245244.1115105104.4265250249.1120110109.4275260259.1125115114.4280265264.1130120119.4290275274.1±1.0135125124.4±0.50295280279.1140130129.4300285284.1145135134.4305290289.1150140139.4315300299.3标准名称标准号G51―2共12页O型橡胶代替号G