行业组件数据 · 2026

密封元件(柱塞/球/阀座)

Critical sealing component in dispensing valves that prevents fluid leakage and ensures precise flow control.

技术定义与适配语境
典型 密封元件(柱塞/球/阀座) 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

A sealing element in dispensing valves, typically comprising a plunger, ball, or seat configuration, designed to create a tight seal between moving parts to prevent fluid or gas leakage during operation. It ensures accurate dosing, maintains pressure integrity, and withstands mechanical wear and chemical exposure in industrial applications.

组件规格

定义
A sealing element in dispensing valves, typically comprising a plunger, ball, or seat configuration, designed to create a tight seal between moving parts to prevent fluid or gas leakage during operation. It ensures accurate dosing, maintains pressure integrity, and withstands mechanical wear and chemical exposure in industrial applications.
工作原理
Operates by creating a physical barrier through compression or contact between the sealing surfaces (e.g., plunger against seat, ball against seat) to block fluid passage. In closed position, the element seals the valve orifice; when actuated, it moves to allow controlled fluid flow, relying on material elasticity and precise machining for leak-proof performance.
材料
Stainless steel (AISI 316L)PTFE (Teflon)Viton (FKM)Buna-N (Nitrile)PEEKCeramic (Alumina)depending on chemical compatibilitytemperature range (-40°C to 200°C)and pressure requirements (up to 100 bar).
Diameter
3-25 mm
Hardness
70-90 Shore A (elastomers)
Leakage Rate
<0.01% of flow rate
Surface Finish
Ra 0.4 μm (metal parts)
Pressure Rating
0-100 bar
Temperature Range
-40°C to 200°C
标准
ISO 5208DIN 3230ASME B16.34

行业分类与别名

密封元件(柱塞/球/阀座) 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Material incompatibility with process fluid->Swelling, cracking, or dissolution of seal->Use chemical resistance charts and conduct material testing before deployment
Excessive pressure or cyclic fatigue->Seal extrusion or permanent deformation->Design with pressure relief, use backup rings, and select materials with higher pressure ratings

工业生态与工程逻辑

0
Seal degradation from chemical incompatibility
1
Wear leading to leakage and inaccurate dosing
2
Installation damage from improper handling
3
Thermal expansion causing seal failure

合规与检测

tolerance
±0.01 mm for critical dimensions
test method
Helium leak testing per ISO 5208, pressure decay testing, and cycle testing under simulated operating conditions

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the typical lifespan of a sealing element in dispensing valves?

Lifespan varies from 500,000 to 5 million cycles, depending on material, operating pressure, fluid compatibility, and maintenance; PTFE and ceramic seals often last longer in abrasive environments.

How do I select the right material for a sealing element?

Consider fluid type (chemical resistance), temperature range, pressure, wear requirements, and regulatory compliance; consult manufacturer charts for material compatibility with specific media like solvents, acids, or food products.

我可以直接联系工厂吗?

CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。

CNFX Industrial Component Index · 机械和设备制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

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