Sealing Gasket / Liner: Temperature Range -40°C to 250°C

Component Specifications

Definition

A precision-engineered sealing component installed between mating surfaces of control gates to create a leak-proof barrier against liquids, gases, or particulates. It compensates for surface irregularities, thermal expansion, and mechanical vibrations while maintaining system pressure and preventing contamination.

Working Principle

Works by compressive deformation to fill microscopic gaps between mating surfaces, creating a mechanical seal through elastic recovery and surface adhesion. The sealing action relies on material compression, surface finish compatibility, and proper bolt loading to maintain continuous contact pressure across the sealing interface.

Materials

Typically made from elastomers (EPDM, Nitrile, Viton), PTFE, graphite, metal (stainless steel, copper), or composite materials. Material selection depends on temperature range (-40°C to 300°C), pressure (up to 300 psi), chemical compatibility, and media type.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	50-90 Shore A
Thickness	1.5-6.0 mm
Compression Set	<20%
Pressure Rating	0-300 psi
Tensile Strength	>10 MPa
Temperature Range	-40°C to 250°C

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

Standards

DIN 3750, ASME B16.21

Parent Products

This component is used in the following industrial products

Control Gate

A mechanical or electromechanical device within a cold feed system that regulates the flow of bulk material or product.

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Engineering Analysis

Risks & Mitigation

Leakage leading to process contamination
Pressure loss affecting system efficiency
Material degradation from chemical exposure
Improper installation causing seal failure

FMEA Triads

Trigger: Insufficient bolt torque during installation
Failure: Incomplete surface contact leading to leakage
Mitigation: Implement torque-controlled installation procedures and verification checks

Trigger: Chemical incompatibility with process media
Failure: Material swelling or degradation compromising seal integrity
Mitigation: Conduct material compatibility testing before selection and installation

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.1 mm thickness, ±0.5 mm outer diameter

Test Method

Helium leak testing per ASTM E493, compression testing per ASTM F36, chemical resistance per ASTM D471

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.

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Manufacturers of Sealing Gasket / Liner

Manufacturer profiles associated with Sealing Gasket / Liner.

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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

How often should control gate sealing gaskets be replaced?

Replacement intervals depend on operating conditions: typically 12-24 months for continuous service, or based on visual inspection for compression set, cracking, or chemical degradation.

What are common failure modes for sealing gaskets?

Common failures include compression set, chemical swelling, thermal degradation, bolt relaxation, and improper surface finish leading to leakage paths.

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.

Sealing Gasket / Liner