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1·When the application is more critical, and the sealing compound may fail due to high heat or pressure, NPTF Dryseal threads are used.

当密封要求严格时，密封剂可能由于高温高压会失效，这时可以采用NPTF干密封螺纹。

2·As special function is required, the construction of polysulfide sealing compound turns into a key procedure in project of a sewage treatment plant.

由于特殊功能要求，聚硫密封膏的施工成为某污水处理厂工程的关键工序。

3·The testing result shows that sealing compound performance is good, costs are low, and is suitable for static seal of pipe line and valve under different temperature conditions.

测试结果表明，该密封胶性能优良，成本低廉，可适用于不同温度条件下的管线阀门等静密封。

4·With NPT threads, after a wrench is applied, slight Spaces at the major and minor diameters may exist that would allow the assembly to leak and therefore a sealing compound is used to fill any gaps.

对于NPT螺纹，使用扳手上紧后，在大直径和小直径上可能允许装配后漏气，因此会使用密封剂来填充所有的间隙。

5·Introduced are some problems concerning the design of compound phosphate fertilizer thick liquid pump in the light of its structure, hydraulic design, and sealing.

从结构型式、水力设计、密封型式等方面论述了磷复肥料浆泵设计的有关问题。

6·Based on pressure and high low temperature cycling tests and theoretic analysis, the threaded joint parts filled with sealing glue compound show excellent seal ability, and can be applied to SRM.

通过压力、高低温循环等大量的试验和理论分析表明：采用填充密封胶的螺纹联接密封结构具有优异的密封性，适宜在固体火箭发动机环境中应用。

7·In order to acquire a good hermetic seal between the diaphragm and the base plate, two sealing methods were used, namely, compound method and crystallite method.

研究了复合法和结晶法两种封接方式，使陶瓷基座与膜片达到良好的匹配封接。

8·A new seal structure suited to solid rocket motors (SRM) is introduced, and threaded joint structures and sealing glue compound are studied.

提出了一种适用于固体火箭发动机(SRM)的新型密封结构，并对应用于特定尺寸的螺纹联接结构方式、胶种选择进行了研究。

9·It introduces formulation design of the compound and development of labyrinth oil seal. The sealing property, ageing resistance arid service life in oil resistance and fitting test are also related.

介绍迷宫式油封的胶料配方设计和试制，在耐油老化和装车运行考验中，其密封性好、耐老化、 寿命长的特点，使橡胶迷宫式货车轴承密封装置的优越性得到较好地体现。

10·The sea1ing ability of API connections mainly depends on the machining parameters of connections themselves, but the sealing aid of thread compound can not be overlooked.

螺纹接头的密封性主要取决于螺纹的加工参数，但螺纹脂对螺纹接头的辅助密封作用不应被忽略。