行业组件数据 · 2026

密封圈

A sealing ring is a mechanical gasket designed to prevent fluid or gas leakage between mating surfaces in aluminum cable glands.

技术定义与适配语境
典型 密封圈 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 sealing ring is a precision-engineered elastomeric or polymeric component used in aluminum cable glands to create a hermetic seal between the cable entry point and the gland body. It functions by compressing against both the cable sheath and gland housing, filling microscopic gaps to block moisture, dust, gases, and contaminants from entering electrical enclosures. These rings maintain seal integrity under varying temperatures, pressures, and mechanical stresses while accommodating cable movement.

组件规格

定义
A sealing ring is a precision-engineered elastomeric or polymeric component used in aluminum cable glands to create a hermetic seal between the cable entry point and the gland body. It functions by compressing against both the cable sheath and gland housing, filling microscopic gaps to block moisture, dust, gases, and contaminants from entering electrical enclosures. These rings maintain seal integrity under varying temperatures, pressures, and mechanical stresses while accommodating cable movement.
工作原理
The sealing ring operates on the principle of radial compression and surface conformity. When the cable gland is tightened, the ring deforms elastically to fill irregularities between the cable outer diameter and gland inner diameter. This creates continuous circumferential contact pressure, forming a barrier against environmental ingress. The ring's material properties ensure it maintains sealing force without permanent deformation or degradation over time.
材料
Nitrile rubber (NBR)Ethylene Propylene Diene Monomer (EPDM)Silicone (VMQ)Fluorocarbon (FKM/Viton)Polyurethane (PU)or Thermoplastic Elastomers (TPE). Material selection depends on temperature range (-60°C to +250°C)chemical resistanceUV stabilityand compliance requirements.
Hardness
40 to 90 Shore A
Cross-Section
Circular, rectangular, or X-profile
Inner Diameter
3mm to 100mm (matches cable OD)
Outer Diameter
5mm to 120mm
Compression Set
<25% (per ASTM D395)
Pressure Rating
Up to 10 bar
Temperature Range
-40°C to +150°C (standard)
标准
ISO 9001ISO 14001DIN EN 62444IEC 62444UL 514BATEX/IECEx

行业分类与别名

密封圈 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

Incorrect ring inner diameter->Inadequate compression on cable surface->Measure cable OD precisely; use rings with ±0.5mm tolerance; select adjustable-profile rings
Chemical exposure incompatible with material->Swelling, cracking, or hardening of ring->Conduct chemical compatibility testing; select FKM for aggressive chemicals; implement regular inspection schedules
Excessive gland tightening torque->Permanent deformation or extrusion of ring->Use torque wrenches per manufacturer specs; install compression limiters; train personnel on proper installation

工业生态与工程逻辑

0
Incorrect sizing leads to leakage
1
Material incompatibility causes swelling/cracking
2
Over-tightening damages ring structure
3
UV degradation in outdoor applications
4
Compression set reduces sealing force over time

合规与检测

tolerance
±0.2mm on ID/OD (ISO 3601-1), compression force 15-30% of cross-section
test method
IP testing per IEC 60529, pressure decay testing, thermal cycling per IEC 60068-2-14, material certification per UL 94/UL 746C

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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 do I select the right sealing ring material for my application?

Choose NBR for oil resistance, EPDM for weather/ozone resistance, silicone for high/low temperature, FKM for chemicals, or TPE for cost-effective general use. Consider temperature, media exposure, and certifications needed.

What causes sealing ring failure in cable glands?

Common causes include incorrect size (mismatched ID/OD), material degradation from UV/chemicals, excessive compression causing permanent set, temperature extremes beyond rating, or improper installation damaging the ring.

Are sealing rings interchangeable between gland brands?

Not always. While some metric sizes are standardized, profile design and material specifications vary. Always verify dimensions, hardness, and chemical compatibility before substitution to maintain IP rating.

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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:SEALING_RING