About

About

Dongguan Baoxing Lubricating Oil Co., Ltd. is a special lubricating grease manufacturer integrating production, research and development, and sales. It mainly deals in Baoxing "B·X" lubricating oil and grease, and specializes in customizing various types of product assembly and equipment maintenance lubricating oil and grease for the manufacturing industry.

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Product Center

Product Center

Dongguan Baoxing Lubricating Oil Co., Ltd. is a special lubricating grease manufacturer integrating production, research and development, and sales. It mainly deals in Baoxing "B·X" lubricating oil and grease, and specializes in customizing various types of product assembly and equipment maintenance lubricating oil and grease for the manufacturing industry.

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Solution

Solution

Dongguan Baoxing Lubricating Oil Co., Ltd. is a special lubricating grease manufacturer integrating production, research and development, and sales. It mainly deals in Baoxing "B·X" lubricating oil and grease, and specializes in customizing various types of product assembly and equipment maintenance lubricating oil and grease for the manufacturing industry.

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Tech Support

Tech Support

Dongguan Baoxing Lubricating Oil Co., Ltd. is a special lubricating grease manufacturer integrating production, research and development, and sales. It mainly deals in Baoxing "B·X" lubricating oil and grease, and specializes in customizing various types of product assembly and equipment maintenance lubricating oil and grease for the manufacturing industry.

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News

News

Dongguan Baoxing Lubricating Oil Co., Ltd. is a special lubricating grease manufacturer integrating production, research and development, and sales. It mainly deals in Baoxing "B·X" lubricating oil and grease, and specializes in customizing various types of product assembly and equipment maintenance lubricating oil and grease for the manufacturing industry.

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Contact

Contact

Dongguan Baoxing Lubricating Oil Co., Ltd. is a special lubricating grease manufacturer integrating production, research and development, and sales. It mainly deals in Baoxing "B·X" lubricating oil and grease, and specializes in customizing various types of product assembly and equipment maintenance lubricating oil and grease for the manufacturing industry.

View more 》
中文
400-030-2118

不同密封圈为什么不能用同一种油?宝星润滑油一文讲清


Release time:

2025-12-17

不同材质的密封圈该如何选择合适的润滑油?其实很多故障都是因为选油不当造成的。密封圈在设备中承担着密封、隔离、减磨的任务,但不同材质的密封圈,对润滑油脂的要求完全不一样。

 

如果选错油,密封圈会溶胀、变硬、变形甚至开裂,最终导致泄漏、卡顿等问题。今天,宝星小编就以几种常见材质为例,来和大家详细聊聊~

 

 

丁腈橡胶(NBR)本身耐油性好,但不耐高温和强极性物质,因此需要选择不会造成溶胀的常规润滑脂。

三元乙丙橡胶(EPDM )虽然耐高温耐水汽,但怕矿物油,一旦接触普通矿物油,就容易膨胀,因此应使用合成基础油或食品级润滑脂。

氟橡胶(FKM) 适配性最广,耐油耐高温,但在高温场景中要注意油脂的抗氧化和不挥发性。

硅胶密封圈耐高低温都不错,但容易被矿物油“慢慢腐蚀”,最好使用相容性好的硅油基或特种合成润滑脂。

 

 

密封圈运行一段时间后变软变胀、回弹变差、密封力下降、操作杆出现发涩或卡顿、在高温或水汽环境下油脂容易被冲走等。这些问题多数来源于油脂与材质不相容,而不是油脂性能不够。

 

密封圈选油时要特别注意以下几点:

确认密封圈材质、选择相容性良好的基础油、食品设备必须选用符合NSF 的食品级润滑脂、高温环境要关注抗氧化与蒸发损失、有湿气或清洗环境的设备需选择抗水抗乳化性能好的油脂。

 

选对油,密封圈寿命能延长很多;选错油,设备故障频率就会不断上升。

 

 

宝星可根据不同密封圈材质提供定制润滑油润滑脂,认证齐全,还能出口。欢迎私信留言,取样测试。