Manufactured by casting polyurethane, main seal ring used in expansion ring testing device for pipeline was designed.

采用浇注型聚氨酯材料，设计了一种管道用胀环试样试验台主密封圈。

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Aimed at main failure modes, the internal geometry of bearing and the structure of cage and seal are improved.

针对其主要失效形式，对轴承的内部几何形状及保持架和密封结构进行了改进。

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Seal air is injected into the labyrinth seals located at the main motor shaft (top and bottom) and at the pinion shaft driving the motor.

密封空气被注入到主马达轴（顶部和下部）和驱动马达的齿轮轴的迷宫式密封里。

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Fawaz Abu-Khadijeh, a cabdriver who is a regular at the mosque, recalls Sheik Safwat asking him for curtains to further seal off the women's prayer area, then separated from the main hall by an eight-foot wall.

CENTERFORSECURITYPOLICY: San Francisco Islamofacists

Seal hunt co-ordinator Roger Simon, while acknowledging it is not a main source of revenue for people in Atlantic Canada, still characterises the commercial hunt as important for fishing communities and for the aboriginal Inuit people further north.

BBC: NEWS | Americas | Canada's seal hunt stokes passion