Sealing Gasket/Lip: Temperature Range -40°C to 200°C

Q: 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.

Q: 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.

Q: What causes premature seal failure?

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

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

Parameter	Typical range	Notes & selection driver
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

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 3760, ISO 6194, SAE J946

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

Typical Suppliers & Equivalents

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

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 Gasket/Lip

Manufacturer profiles associated with Sealing Gasket/Lip.

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Frequently Asked Questions

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