INDUSTRY COMPONENT

Sealing Gasket/Lip

A sealing gasket or lip seal is a mechanical component designed to prevent fluid leakage between mating surfaces in industrial machinery.

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Component Specifications

Definition
A sealing gasket/lip is a critical sealing component used in industrial sealing systems to create a barrier against the escape or ingress of fluids (liquids or gases) between stationary or moving parts. It functions by filling irregularities between mating surfaces under compression, while lip seals specifically use flexible lips that maintain contact with rotating shafts to prevent leakage.
Working Principle
Works through compression (gaskets) or radial lip contact (lip seals) to fill surface imperfections and create a tight seal. Gaskets rely on bolt compression to deform and seal interfaces, while lip seals use spring-loaded flexible lips that maintain constant contact with rotating shafts through controlled interference fit.
Materials
Nitrile rubber (NBR), Fluoroelastomer (FKM/Viton), Silicone (VMQ), Ethylene Propylene Diene Monomer (EPDM), Polytetrafluoroethylene (PTFE), Compressed fiber, Metal-reinforced composites
Technical Parameters
  • Hardness 50-90 Shore A
  • Compression Set <25%
  • Pressure Rating Up to 100 bar
  • Temperature Range -40°C to 200°C
  • Lip Spring Tension 0.5-2.5 N
  • Chemical Compatibility Oil, water, chemicals
Standards
ISO 3601, DIN 3760, ISO 6194, SAE J946

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Sealing Gasket/Lip.

sealing gasket lip seal industrial seal mechanical seal fluid sealing gasket material sealing system shaft seal compression seal Sealing Gasket/Lip Sealing Gasket/Lip in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Sealing System

A critical component of the slot-die coating head that prevents coating material leakage and maintains precise gap control between the die lips.

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Engineering Analysis

Risks & Mitigation
  • Fluid leakage
  • Contamination ingress
  • Equipment downtime
  • Safety hazards
  • Environmental pollution
FMEA Triads
Trigger: Improper installation torque
Failure: Uneven compression leading to leakage paths
Mitigation: Use calibrated torque wrenches and follow manufacturer specifications
Trigger: Chemical incompatibility
Failure: Material degradation and seal swelling/shrinking
Mitigation: Verify chemical resistance charts and select appropriate material grade
Trigger: Excessive shaft runout
Failure: Lip wear and premature seal failure
Mitigation: Maintain shaft runout within 0.1mm TIR and ensure proper alignment

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.1mm on critical dimensions, surface finish Ra 0.4-0.8μm for sealing surfaces
Test Method
Pressure decay testing, helium leak testing, visual inspection per ASTM F37, ISO 188

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between a gasket and a lip seal?

Gaskets seal between stationary surfaces through compression, while lip seals seal between stationary and rotating surfaces using flexible lips that maintain contact with shafts.

How often should sealing gaskets be replaced?

Replacement intervals depend on operating conditions, but typically range from 6 months to 5 years. Factors include temperature, pressure, chemical exposure, and mechanical wear.

What causes premature seal failure?

Common causes include improper installation, excessive temperature, chemical incompatibility, shaft misalignment, surface roughness issues, and incorrect compression.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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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