Flexible Connectors: Diameter Range 50mm to 2000mm

Component Specifications

Definition

Flexible connectors are engineered components used in industrial ducting systems to absorb vibrations, compensate for thermal expansion/contraction, accommodate misalignment between connected ducts, and reduce noise transmission. They typically consist of a flexible membrane or bellows structure made from durable materials, often reinforced with fabric or metal, and include flanges or connectors for secure attachment to rigid duct sections.

Working Principle

Flexible connectors work by utilizing their elastic or accordion-like structure to deform under mechanical stress, vibration, or thermal changes. This deformation absorbs energy that would otherwise transfer through the ducting system, preventing damage to equipment and reducing noise. They maintain a sealed connection while allowing controlled movement in multiple axes.

Materials

Common materials include: synthetic rubber (EPDM, neoprene, silicone), fabric-reinforced elastomers, stainless steel bellows, aluminum, and composite materials. Reinforcement layers often incorporate polyester, fiberglass, or aramid fibers. Temperature resistance typically ranges from -40°C to +200°C depending on material.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Flange Types	Plain, flanged, or band-clamp connections
Diameter Range	50mm to 2000mm
Pressure Rating	Up to 25 kPa
Temperature Range	-40°C to +200°C
Movement Capability	Axial: ±10mm, Lateral: ±15mm, Angular: ±5°

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 5801, DIN 24194, ASHRAE 120

Parent Products

This component is used in the following industrial products

Ducting System

A network of conduits designed to transport airborne dust and particles from collection points to filtration units within a dust containment system.

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Engineering Analysis

Risks & Mitigation

Material degradation from chemical exposure
Fatigue failure from excessive movement
Leakage due to improper installation
Fire hazard if incompatible with system temperatures

FMEA Triads

Trigger: Excessive vibration beyond design limits
Failure: Material fatigue and cracking
Mitigation: Install vibration dampeners upstream, select connectors with higher movement ratings

Trigger: Chemical exposure incompatible with material
Failure: Material degradation and leakage
Mitigation: Use chemically resistant materials (e.g., PTFE-lined), implement regular chemical compatibility checks

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±2mm on diameter dimensions, ±1° on angular alignment

Test Method

Pressure testing per ISO 5801, movement cycle testing, material flammability testing (UL 94)

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.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Flexible Connectors

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Xiamen Zhongxinglong Air Conditioning Equipment Co., Ltd.

Xiamen, Fujian, CN

Also makes: Ventilation System, Valve Actuator, Gate Assembly and 7 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “flexible connectors for ductwork”
View source page ↗ zoslonghvac.com · recorded 2026-09-05

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Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.

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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Frequently Asked Questions

What are the main benefits of using flexible connectors in ducting systems?

Flexible connectors reduce vibration transmission, compensate for thermal expansion, accommodate installation misalignments, decrease noise levels, and prevent stress damage to connected equipment.

How often should flexible connectors be inspected and replaced?

Inspect every 6-12 months for cracks, deformation, or material degradation. Replace every 3-5 years depending on operating conditions, or immediately if visible damage or leakage occurs.

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.

Flexible Connectors