Compression Ring/Clamp: Inner Diameter Range 3mm to 100mm

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

Parameter	Typical range	Notes & selection driver
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

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 9521, IEC 62444, DIN 40430, UL 514B

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

Typical Suppliers & Equivalents

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

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Compression Ring/Clamp

Manufacturer profiles associated with Compression Ring/Clamp.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Gland Body

A gland body is the main housing component of an aluminum cable gland that provides mechanical protection and environmental sealing for electrical cables entering enclosures.

Current Sense Resistor

A precision resistor used to measure current flow in electrical circuits by converting current to a measurable voltage drop.

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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compression Ring/Clamp