INDUSTRY COMPONENT

Sealing Elements

Sealing elements for nozzle rings prevent fluid leakage and maintain pressure in industrial systems.

Component Specifications

Definition
Sealing elements are precision-engineered components installed in nozzle rings to create hermetic barriers between moving or static parts, preventing the escape of liquids, gases, or contaminants. They ensure operational integrity by maintaining system pressure, protecting internal components from wear, and enhancing efficiency in applications like injection molding, spraying systems, and fluid transfer.
Working Principle
Sealing elements function by applying compressive force against mating surfaces, filling microscopic gaps to block fluid passage. In nozzle rings, they typically use elastomeric or polymeric materials that deform under pressure to conform to surface irregularities, creating a tight seal. Some designs incorporate spring-loaded mechanisms or lip seals that maintain contact during thermal expansion or vibration.
Materials
Common materials include Nitrile Rubber (NBR) for oil resistance, Fluorocarbon (FKM/Viton) for high temperatures, Ethylene Propylene Diene Monomer (EPDM) for steam/chemicals, Polytetrafluoroethylene (PTFE) for low friction, and Polyurethane (PU) for abrasion resistance. Hardness ranges from 70 to 90 Shore A.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Size Range10 mm to 500 mm diameter
Pressure Range0 to 100 bar
Compression Set<20%
Operating Temperature-40°C to 250°C
Chemical CompatibilityResistant to oils, fuels, acids

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 3601, DIN 3770, ISO 6194

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Seal degradation from thermal cycling
  • Improper installation causing leaks
  • Chemical incompatibility leading to swelling/cracking
FMEA Triads
Trigger: Excessive temperature exceeding material limits
Failure: Hardening or cracking of seal
Mitigation: Use high-temperature materials like FKM and install cooling systems
Trigger: Misalignment during installation
Failure: Uneven wear and premature leakage
Mitigation: Follow manufacturer torque specifications and use alignment tools

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.1 mm on critical dimensions per ISO 3601
Test Method
Pressure decay testing per ISO 188 and compression set testing per ASTM D395

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 Sealing Elements

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.

RigNexis®
Zhuzhou, Hunan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “密封件 / Seals & Sealing Elements”
View source page ↗ rignexis.com · checked 2026-09-16

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

How often should nozzle ring sealing elements be replaced?

Replacement intervals depend on operating conditions; typically every 6-24 months. Monitor for leaks, compression set, or visible damage.

Can sealing elements be used with aggressive chemicals?

Yes, select materials like FKM or PTFE for chemical resistance. Always verify compatibility charts for specific fluids.

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.

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