行业组件数据 · 2026

密封圈/刮尘圈

Seal/Wiper for boom sections prevents contamination and fluid leakage in hydraulic systems.

技术定义与适配语境
典型 密封圈/刮尘圈 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 dual-function sealing component installed on telescopic boom sections of heavy machinery (excavators, cranes, aerial lifts) that combines a wiper/scraper to remove external contaminants (dust, mud, debris) and a primary seal to retain hydraulic fluid within the cylinder, maintaining system integrity and preventing premature wear.

组件规格

定义
A dual-function sealing component installed on telescopic boom sections of heavy machinery (excavators, cranes, aerial lifts) that combines a wiper/scraper to remove external contaminants (dust, mud, debris) and a primary seal to retain hydraulic fluid within the cylinder, maintaining system integrity and preventing premature wear.
工作原理
The wiper lip contacts the moving rod surface to scrape off contaminants during retraction, while the sealing lip maintains constant contact pressure to create a fluid-tight barrier against hydraulic pressure (typically 20-40 MPa), using elastomeric deformation and spring reinforcement to compensate for surface imperfections and thermal expansion.
材料
Polyurethane (PU 95A-98A hardness) for abrasion resistanceNitrile rubber (NBR 70-90 Shore A) for oil compatibilityor Fluorocarbon (FKM) for high-temperature applicationsoften includes stainless steel spring (AISI 304/316) or PTFE anti-extrusion rings.
Hardness
70-98 Shore A
Lip Design
Double-lipped with scraper edge
Rod Diameter
50-200 mm
Pressure Rating
Up to 40 MPa
Temperature Range
-40°C to +120°C
标准
ISO 6194DIN 3760SAE J515

行业分类与别名

密封圈/刮尘圈 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

Abrasive particles embedding in wiper lip->Scoring of rod surface leading to fluid leakage->Install external bellows or scraper rings in high-contamination environments
Excessive heat from sustained high-pressure operation->Thermal degradation of elastomer reducing sealing force->Use high-temperature materials (FKM) and ensure adequate cooling

工业生态与工程逻辑

0
Seal extrusion under high side-loads
1
Lip hardening from UV/ozone exposure
2
Contamination ingress due to worn wiper edge
3
Fluid incompatibility causing swelling/cracking

合规与检测

tolerance
±0.1 mm on sealing diameters per ISO 286-2
test method
ISO 7986 (hydraulic fluid leakage test) and ASTM D1414 (compression set resistance)

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

How often should boom section seals be replaced?

Typically every 2,000-5,000 operating hours or during cylinder overhaul, depending on contamination exposure and pressure cycles.

Can seals interchange between different boom manufacturers?

Only with identical dimensional specs (rod diameter, groove width) and material compatibility; always verify OEM cross-reference charts.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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初步技术归类
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URN:CNFX:ME:UNIT:SEAL_WIPER