Plug (straight thread O-ring)

Pipe threads where pressure-tight joints are made on the threads

GB/T7306-1987用螺纹密封的管螺纹

Pipe threads where pressure-tight joints are not made on the threads

GB/T7307-1987非螺纹密封的管螺纹

Gauges for sealing tube threads

用螺纹密封的管螺纹量规

Gauges for nonsealing tube threads

非螺纹密封的管螺纹量规

unsintered polytetrafluoroethylene tapes for thread sealing

螺纹密封用结非烧聚四氟聚乙烯带

United States standard dry seal thread

美国标准干密封螺纹

Design and manufacture of hight pressure seal thread socket with large ddameter and big pitch

大直径大螺距高压密封螺纹套管设计与制造

A finite element analysis of the self-sealed special hook-shaped thread of end-surface metal

端面金属自密封特殊钩形螺纹有限元分析

THE STRUCTURAL ANALYSIS OF THREAD LOCKED HEAT EXCHANGERS AND DIAPHRAGM HEAT EXCHANGERS

螺纹锁紧环换热器与隔膜密封换热器的结构分析

The valve outlet sealing area is also flat. The nut fits on the nipple so the shoulder of the nipple rests on the pushing surface of the nut.

阀门排气口密封区域也是平的。螺母配合在管接口上，因而管接口靠在螺母的螺纹正面。

Use Teflon? tape or approved pipe sealant on threads and install new anode rod.

在螺纹上采用聚四氟乙烯密封带或通过认证的管道密封材料，安装新的阳极棒。

large-size precision thread ring and plug gauge

大型精密螺纹环塞规

metal bellows mechanical seal

金属波纹管机械密封

rubber bellows mechanical seal

橡胶波纹管机械密封

bellows sealed gate valve

波纹管密封的闸板阀

bellows seal bonnet

波纹管密封型上阀盖

calculation for bolt load of double-cone seal

双锥密封的螺栓力计算

Avoid improper application and excessive pipe sealants such as teflon? tape and pipe dope.

避免不适当的应用和过量的管道密封剂，如特氟隆生料带和螺纹润滑油。