行业组件数据 · 2026

密封压盖

A sealing gland is a mechanical component used to create a secure, sealed connection between a wire harness and an enclosure, providing strain relief and environmental protection.

技术定义与适配语境
典型 密封压盖 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 gland, specifically within industrial wire harness strain relief bushings, is a precision-engineered component designed to secure and seal the entry point of cables or wires into an enclosure. It functions by compressing a sealing element (typically an elastomeric gasket or O-ring) against the cable and the enclosure wall, creating a watertight, dustproof, and strain-resistant seal. This prevents environmental contaminants from entering the enclosure while also anchoring the cable to absorb mechanical stress, vibrations, and pull forces, thereby protecting internal electrical connections from damage.

组件规格

定义
A sealing gland, specifically within industrial wire harness strain relief bushings, is a precision-engineered component designed to secure and seal the entry point of cables or wires into an enclosure. It functions by compressing a sealing element (typically an elastomeric gasket or O-ring) against the cable and the enclosure wall, creating a watertight, dustproof, and strain-resistant seal. This prevents environmental contaminants from entering the enclosure while also anchoring the cable to absorb mechanical stress, vibrations, and pull forces, thereby protecting internal electrical connections from damage.
工作原理
The sealing gland operates on a compression sealing principle. When the gland nut is tightened, it axially compresses a sealing element (e.g., a rubber grommet or conical seal) between the gland body and the enclosure. This compression radially deforms the seal against both the outer jacket of the cable and the inner wall of the mounting hole, creating a hermetic barrier. Simultaneously, the mechanical grip of the gland body and nut provides strain relief by clamping the cable, transferring any tensile or vibrational loads to the enclosure rather than the internal terminations.
材料
Body: Nylon 6/6PolyamideStainless Steel (AISI 304/316)BrassAluminum. Sealing Element: Nitrile Rubber (NBR)Ethylene Propylene Diene Monomer (EPDM)Silicone (VMQ)Fluorocarbon (FKM/Viton). Gland Nut: Same as body material or coated steel.
IP Rating
IP68, IP69K
Thread Size
M12x1.5 to M40x1.5 (metric), PG7 to PG21 (conduit), NPT 1/4" to 1"
Pressure Rating
Up to 10 bar (with appropriate seal)
EMI/RFI Shielding
Optional (with metallic components or conductive seals)
Temperature Range
-40°C to +120°C (dependent on seal material)
UL/CSA Recognition
Yes (for flame-retardant materials)
Cable Diameter Range
3mm to 25mm
标准
ISO 9001DIN 40050-9IEC 60529UL 94RoHSREACH

行业分类与别名

密封压盖 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

Improper torque application during installation->Insufficient compression leads to seal leakage; over-torque cracks the gland body or deforms the seal permanently->Use a calibrated torque wrench following manufacturer specs; implement installer training and visual torque indicators
Chemical exposure incompatible with seal material->Seal swelling, cracking, or degradation, resulting in loss of environmental protection->Conduct material compatibility testing for specific chemicals; select FKM or EPDM seals for aggressive environments
High vibration or thermal cycling->Gland nut loosening, loss of compression, and eventual seal failure->Apply thread-locking adhesive; use glands with locknuts or spring washers; specify designs with vibration-resistant features

工业生态与工程逻辑

0
Incorrect installation leading to seal failure
1
Material incompatibility causing chemical degradation
2
Over-tightening damaging the cable or threads
3
Undersized gland allowing cable pull-out
4
Vibration loosening the gland nut over time

合规与检测

tolerance
Thread tolerance: 6g for metric threads per ISO 965-1; cable entry hole tolerance: ±0.5mm; seal compression force: 20-30 N·m per diameter range
test method
IP rating tested per IEC 60529 (water/dust ingress); vibration testing per IEC 60068-2-6; pull-out force tested per UL 2238; material flammability per UL 94; chemical resistance per ASTM D471

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 difference between a sealing gland and a standard cable gland?

A sealing gland specifically incorporates enhanced sealing elements and strain relief features designed for wire harness applications in harsh environments, often meeting higher IP ratings (like IP68/IP69K) and providing superior vibration resistance compared to basic cable glands.

How do I select the right sealing gland material?

Choose based on environment: Nylon for general use, stainless steel for corrosive/outdoor settings. Select seal material: NBR for oils, EPDM for weather/steam, Silicone for high/low temperatures, FKM for chemicals. Ensure compatibility with cable diameter and thread type.

Can sealing glands be reused?

Typically, yes, but the sealing element may degrade with repeated compression. Inspect seals for cracks or permanent deformation after disassembly. It is recommended to replace the sealing element during maintenance for guaranteed performance.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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URN:CNFX:ME:UNIT:SEALING_GLAND