INDUSTRY COMPONENT

Sealing Ring

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

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Component Specifications

Definition
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.
Working Principle
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.
Materials
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 resistance, UV stability, and compliance requirements.
Technical Parameters
  • 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)
Standards
ISO 9001, ISO 14001, DIN EN 62444, IEC 62444, UL 514B, ATEX/IECEx

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Sealing Ring.

sealing ring cable gland seal EPDM gasket NBR O-ring IP68 sealing explosion-proof gland waterproof connector industrial sealing solutions Sealing Ring in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Aluminum Cable Gland

Aluminum fitting for securing and sealing electrical cables entering enclosures

View Product Details

Cable Gland

A mechanical device used to securely attach and seal the end of an electrical cable to equipment, providing strain relief and environmental protection.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Incorrect sizing leads to leakage
  • Material incompatibility causes swelling/cracking
  • Over-tightening damages ring structure
  • UV degradation in outdoor applications
  • Compression set reduces sealing force over time
FMEA Triads
Trigger: Incorrect ring inner diameter
Failure: Inadequate compression on cable surface
Mitigation: Measure cable OD precisely; use rings with ±0.5mm tolerance; select adjustable-profile rings
Trigger: Chemical exposure incompatible with material
Failure: Swelling, cracking, or hardening of ring
Mitigation: Conduct chemical compatibility testing; select FKM for aggressive chemicals; implement regular inspection schedules
Trigger: Excessive gland tightening torque
Failure: Permanent deformation or extrusion of ring
Mitigation: Use torque wrenches per manufacturer specs; install compression limiters; train personnel on proper installation

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

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

Buyer Feedback

★★★★☆ 4.8 / 5.0 (36 reviews)

"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Sealing Ring so far."

"Testing the Sealing Ring now; the technical reliability results are within 1% of the laboratory datasheet."

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

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Frequently Asked Questions

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.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Sealing Lip Sealing Ring/Gasket