INDUSTRY COMPONENT

Compression Ring/Clamp

A compression ring/clamp is a mechanical component used in cable glands and connectors to create secure, sealed connections for electrical cables by applying uniform radial pressure.

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Component Specifications

Definition
A compression ring or clamp is a critical component within cable glands and electrical connectors designed to secure and seal cables entering enclosures. It functions by applying controlled radial compression around the cable's outer sheath when the gland is tightened, preventing cable pull-out, strain relief, and providing environmental protection against dust, moisture, and gases. This component ensures electrical continuity, mechanical stability, and maintains the ingress protection (IP) rating of the enclosure system.
Working Principle
The compression ring operates on the principle of radial compression. When the cable gland's locking nut is tightened, it forces the compression ring (often a tapered or segmented design) to contract uniformly inward. This inward radial force grips the cable jacket securely without damaging the internal conductors, creating both a mechanical anchor and an environmental seal by compressing against both the cable and the gland body.
Materials
Typically made from corrosion-resistant materials: Neoprene rubber (for flexibility and sealing), Nylon (PA6, PA66 for durability and insulation), Brass (for conductivity and corrosion resistance in hazardous areas), Stainless Steel (AISI 304/316 for high corrosion resistance), or Aluminum (for lightweight applications). Material selection depends on environmental conditions (temperature, chemicals) and required certifications.
Technical Parameters
  • Cable Types Armored, Unarmored, Braided
  • Thread Standards M12 to M75 metric, NPT, PG
  • Compression Force 10N to 500N (varies by size/material)
  • Temperature Range -40°C to +120°C (material dependent)
  • IP Rating Supported IP68, IP69K
  • Inner Diameter Range 3mm to 100mm
Standards
ISO 9521, IEC 62444, DIN 40430, UL 514B

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Compression Ring/Clamp.

cable gland compression ring electrical connector clamp radial compression seal cable strain relief ingress protection component industrial cable management Compression Ring/Clamp Compression Ring/Clamp in Electrical Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Cable Gland / Connector

A mechanical device used to securely attach and seal electrical cables to equipment housings while providing strain relief and environmental protection.

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Engineering Analysis

Risks & Mitigation
  • Incorrect sizing leading to poor seal or cable damage
  • Material incompatibility causing corrosion or degradation
  • Over-tightening deforming the ring or cable
  • Under-tightening resulting in ingress of contaminants
FMEA Triads
Trigger: Incorrect ring size installed
Failure: Poor compression seal, allowing moisture/dust ingress, cable slippage
Mitigation: Implement visual gauge checks, use manufacturer sizing charts, train installers on proper selection
Trigger: Material degradation due to chemical exposure
Failure: Loss of sealing elasticity, cracking, loss of IP rating
Mitigation: Select chemically resistant materials (e.g., Viton, EPDM) for harsh environments, conduct regular inspections
Trigger: Over-torquing during installation
Failure: Plastic deformation of ring, crushing of cable sheath, compromised seal
Mitigation: Use calibrated torque tools, follow manufacturer torque specifications, provide installation training

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Inner diameter tolerance typically ±0.2mm to ±0.5mm depending on size; compression force tolerance ±15% of specified value
Test Method
IP ingress testing per IEC 60529, pull-out force testing per IEC 62444, compression set testing per ASTM D395, material certification per RoHS/REACH

Buyer Feedback

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Frequently Asked Questions

What is the main function of a compression ring in a cable gland?

The primary function is to create a secure mechanical grip on the cable to prevent pull-out and provide an environmental seal against dust, water, and gases, maintaining the enclosure's IP rating.

Can compression rings be reused?

Generally not recommended. Compression rings may deform permanently after tightening. Reuse can compromise the seal and grip. Always replace with a new ring when reinstalling.

How do I select the correct compression ring size?

Match the ring's inner diameter to the cable's outer diameter precisely. Most manufacturers provide sizing charts. An undersized ring can damage the cable; an oversized ring will not seal properly.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Compression Nut Conductive Strip/Bar