INDUSTRY COMPONENT

Seal / Packing

Critical sealing component for pump heads and fluid blocks that prevents leakage and maintains pressure integrity in industrial fluid systems.

Component Specifications

Definition
A precision-engineered sealing component specifically designed for pump heads and fluid blocks in industrial machinery. It creates a barrier between moving and stationary parts to prevent fluid leakage, maintain system pressure, and protect against contamination. These seals are engineered to withstand varying pressures, temperatures, and chemical exposures while ensuring reliable operation in demanding industrial environments.
Working Principle
Operates on the principle of creating a physical barrier through compression and material deformation. When installed between mating surfaces, the seal material deforms to fill microscopic imperfections, creating a leak-proof barrier. Dynamic seals work through controlled friction and lubrication, while static seals rely on compression and material resilience to maintain sealing integrity under pressure fluctuations and thermal cycling.
Materials
Material selection depends on application requirements: Nitrile rubber (NBR) for general oil and water resistance, Fluorocarbon (FKM/Viton) for chemical resistance, Ethylene Propylene Diene Monomer (EPDM) for steam and hot water, Polytetrafluoroethylene (PTFE) for extreme chemical resistance, Metal (stainless steel, bronze) for high-pressure applications, and composite materials for specialized conditions.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Hardness70-90 Shore A
Compression Set<20%
Pressure Rating0-1000 psi (varies by type)
Tensile Strength10-25 MPa
Temperature Range-40°C to 300°C
Elongation At Break150-400%

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, ISO 6194, DIN 3760, DIN 3771, ASTM D2000

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Fluid leakage leading to environmental contamination
  • Pressure loss affecting system performance
  • Component damage from seal failure
  • Downtime and maintenance costs
  • Safety hazards from high-pressure leaks
FMEA Triads
Trigger: Material degradation from chemical exposure
Failure: Loss of sealing integrity leading to leakage
Mitigation: Implement material compatibility testing and use chemical-resistant materials like FKM or PTFE
Trigger: Excessive compression set from over-tightening
Failure: Permanent deformation reducing sealing effectiveness
Mitigation: Follow manufacturer torque specifications and use proper installation tools
Trigger: Thermal cycling beyond material limits
Failure: Cracking or hardening of seal material
Mitigation: Select materials with appropriate temperature ratings and consider thermal expansion in design

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.1mm for critical dimensions, surface finish Ra 0.4-1.6μm
Test Method
Pressure testing per ISO 5208, leak rate measurement per ISO 15848, material testing per ASTM standards

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 Seal / Packing

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.

JOCHAMP
Rui'an, Zhejiang, CN
Founded 2005
CE ISO9001 SGS
Listed on the company's own website · profile compiled by CNFX from public sources

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

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Frequently Asked Questions

What is the difference between static and dynamic seals in pump applications?

Static seals are used between stationary components like flanges and housings, relying on compression to create a seal. Dynamic seals are used between moving parts like shafts and housings, requiring materials that can withstand friction while maintaining sealing integrity.

How often should pump seals be replaced?

Replacement intervals depend on operating conditions, but typically range from 6 months to 3 years. Factors include fluid type, pressure, temperature, and mechanical wear. Regular inspection for leakage, wear, or compression set is recommended.

What causes premature seal failure in industrial pumps?

Common causes include improper installation, chemical incompatibility, excessive temperature, pressure spikes, shaft misalignment, abrasive particles in fluid, and incorrect material selection for the application.

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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