行业组件数据 · 2026

密封组件

A precision sealing assembly for feed pump modules that prevents fluid leakage and maintains pressure integrity in industrial pumping systems.

技术定义与适配语境
典型 密封组件 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。

The Seal Assembly is a critical component within the Feed Pump Module, designed to create a hermetic barrier between rotating and stationary parts. It prevents process fluid leakage, maintains system pressure, controls contamination, and reduces friction in high-pressure pumping applications. This assembly typically consists of multiple sealing elements working in conjunction to handle dynamic pressure differentials and thermal expansion.

组件规格

定义
The Seal Assembly is a critical component within the Feed Pump Module, designed to create a hermetic barrier between rotating and stationary parts. It prevents process fluid leakage, maintains system pressure, controls contamination, and reduces friction in high-pressure pumping applications. This assembly typically consists of multiple sealing elements working in conjunction to handle dynamic pressure differentials and thermal expansion.
工作原理
The seal assembly operates on the principle of creating controlled interfacial contact between rotating and stationary surfaces. It utilizes mechanical force (spring-loaded or hydraulic) to maintain sealing pressure, while secondary sealing elements accommodate thermal expansion and shaft deflection. The primary seal face creates a thin fluid film through hydrodynamic or hydrostatic pressure, balancing leakage prevention with friction reduction.
材料
Primary seal faces: Silicon carbide (SiC)Tungsten carbide (WC)Alumina ceramic (Al2O3)Secondary seals: Fluoroelastomer (FKM/Viton)Perfluoroelastomer (FFKM)Ethylene propylene diene monomer (EPDM)Gaskets: Expanded graphitePTFESprings: Inconel 718Hastelloy C-276Hardware: 316 stainless steelDuplex stainless steel
Flatness
≤ 1 light band
Face Width
3-12 mm
Spring Load
2-15 N/mm
Leakage Rate
< 10 ml/hr
Shaft Diameter
20-150 mm
Surface Finish
Ra 0.2-0.4 μm
Pressure Rating
0-25 MPa
Temperature Range
-40°C to 400°C
标准
ISO 21049API 682DIN 24960ANSI/B93.55M

行业分类与别名

密封组件 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

Inadequate cooling/lubrication->Thermal cracking of seal faces->Implement temperature monitoring with automatic shutdown at 120°C, ensure proper flush flow rates per API 682 Plan 11/13
Shaft misalignment > 0.05 mm->Uneven wear and premature leakage->Install laser alignment during assembly, use flexible coupling designs, implement quarterly alignment checks
Particulate contamination > 25 μm->Abrasive wear and seal face scoring->Install dual filtration (10 μm primary, 3 μm secondary), implement fluid analysis every 500 operating hours

工业生态与工程逻辑

0
Catastrophic fluid leakage
1
System pressure loss
2
Contamination ingress
3
Shaft scoring damage
4
Thermal runaway
5
Seal face blistering
6
Spring fatigue failure
7
Secondary seal extrusion

合规与检测

tolerance
Shaft runout: ≤ 0.05 mm TIR; Face flatness: ≤ 0.0009 mm; Squareness: ≤ 0.025 mm/100 mm; Surface finish: 0.2-0.4 Ra
test method
Hydrostatic pressure test per ISO 21049 (1.5x design pressure for 30 min), helium leak test (< 1×10⁻⁶ mbar·l/s), dynamic run-in test (24 hrs at rated conditions), thermal cycling test (-40°C to 200°C, 5 cycles)

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 service life of a feed pump seal assembly?

Service life varies from 12-36 months depending on operating conditions, with proper maintenance. Critical factors include fluid compatibility, pressure cycling frequency, temperature stability, and particulate contamination levels.

How do I select the right seal material for my application?

Material selection depends on fluid chemistry (pH, abrasives, corrosives), temperature range, pressure requirements, and regulatory compliance. Silicon carbide offers excellent chemical resistance, while tungsten carbide provides superior wear resistance in abrasive applications.

What are common signs of seal assembly failure?

Visible leakage, increased power consumption, abnormal noise/vibration, temperature rise at seal faces, and fluid contamination are primary indicators. Regular monitoring of leakage rates and seal face temperature can predict failure before catastrophic breakdown.

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CNFX Industrial Component Index · 机械和设备制造

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URN:CNFX:ME:UNIT:SEAL_ASSEMBLY