Insulating Gasket/Seal: Temperature Range -40°C to +150°C

Component Specifications

Definition

A precision-engineered insulating gasket/seal designed for cell housing assemblies in battery systems, providing both electrical insulation between conductive components and environmental sealing against moisture, dust, and contaminants. This component ensures safe electrical isolation while maintaining structural integrity and preventing electrolyte leakage in battery applications.

Working Principle

Functions through dielectric material properties to prevent electrical current flow between conductive surfaces while maintaining compression to create a hermetic or environmental seal. The gasket/seal material's high dielectric strength blocks electrical conduction, while its elastic properties maintain sealing force under thermal cycling and mechanical stress.

Materials

Typically made from fluoropolymers (PTFE, FEP), silicone rubber, EPDM, or specialized composite materials with dielectric strength >15 kV/mm, temperature resistance from -40°C to +150°C, and chemical resistance to electrolytes and cleaning agents.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	50-80 Shore A
Compression Set	<25%
Temperature Range	-40°C to +150°C
Volume Resistivity	>10^12 Ω·cm
Dielectric Strength	>15 kV/mm
Flammability Rating	UL94 V-0
Thickness Tolerance	±0.1 mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

IEC 60601-1, UL 94, ASTM D2000

Parent Products

This component is used in the following industrial products

Cell Housing Assembly

The structural enclosure that contains and protects the internal components of a lithium-ion battery cell.

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Engineering Analysis

Risks & Mitigation

Electrical short circuit due to insulation failure
Electrolyte leakage causing corrosion
Thermal degradation at high temperatures
Compression set leading to seal failure
Chemical incompatibility with electrolytes

FMEA Triads

Trigger: Material degradation from thermal cycling
Failure: Loss of sealing capability and reduced dielectric strength
Mitigation: Use materials with appropriate temperature ratings and implement thermal management systems

Trigger: Improper installation compression
Failure: Inadequate sealing or material damage
Mitigation: Implement torque-controlled installation procedures and training

Trigger: Chemical attack from electrolytes
Failure: Material swelling, softening, or cracking
Mitigation: Select chemically compatible materials and conduct compatibility testing

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm thickness, ±0.2 mm dimensions

Test Method

Dielectric strength testing per IEC 60243, compression set testing per ASTM D395, leak testing per ISO 9978, thermal cycling per IEC 60068-2-14

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

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Manufacturers of Insulating Gasket/Seal

Manufacturer profiles associated with Insulating Gasket/Seal.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the primary function of an insulating gasket/seal in cell housing assemblies?

The primary function is dual-purpose: providing electrical insulation between conductive components to prevent short circuits and creating an environmental seal to protect against moisture, dust, and electrolyte leakage.

What materials are commonly used for insulating gaskets/seals in battery applications?

Common materials include fluoropolymers like PTFE and FEP for high chemical resistance, silicone rubber for wide temperature range, and EPDM for cost-effective solutions. Material selection depends on specific application requirements including temperature, chemical exposure, and dielectric needs.

How does compression affect insulating gasket/seal performance?

Proper compression ensures effective sealing by maintaining contact pressure between surfaces. Insufficient compression can cause leaks, while excessive compression may damage the material or reduce dielectric properties. Typical compression is 15-30% of original thickness.

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.

Insulating Gasket/Seal