O-Ring Seal: Temperature Range -40°C to 200°C

Q: What material is best for O-rings in ceramic membrane filters?

FKM/Viton is recommended for most chemical filtration applications due to excellent chemical resistance. EPDM is suitable for steam or hot water applications, while FFKM is used for aggressive chemical environments.

Q: How often should O-ring seals be replaced in ceramic filters?

Typically every 6-12 months or during routine maintenance, depending on operating conditions. Signs of replacement include visible cracks, flattening, or increased leakage.

Q: Can O-rings handle thermal cycling in ceramic filters?

Yes, properly selected elastomers (especially FKM and EPDM) accommodate thermal expansion of ceramic elements from -40°C to 200°C while maintaining seal integrity.

Component Specifications

Definition

A toroidal elastomeric sealing component designed to create a static or dynamic seal between the ceramic membrane filter element and its housing in industrial filtration systems. It prevents fluid bypass, maintains pressure differentials, and ensures contamination-free operation by sealing the interface between the porous ceramic element and the filter assembly.

Working Principle

The O-ring creates a seal through elastic deformation when compressed between two mating surfaces (filter housing and ceramic element). Under system pressure, it deforms to fill microscopic imperfections, creating a barrier that prevents fluid leakage while allowing for thermal expansion and mechanical movement of the ceramic membrane.

Materials

Fluoroelastomer (FKM/Viton) or Ethylene Propylene Diene Monomer (EPDM) for chemical resistance; Nitrile Rubber (NBR) for oil-based applications; Perfluoroelastomer (FFKM) for extreme chemical environments. Hardness: 70-90 Shore A. Temperature range: -40°C to 200°C depending on material.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Inner Diameter	10mm to 200mm
Compression Set	<20% after 24h at 150°C
Pressure Rating	Up to 10 MPa (static), 3 MPa (dynamic)
Temperature Range	-40°C to 200°C
Chemical Compatibility	Resistant to acids, alkalis, solvents per material selection
Cross Section Diameter	1.5mm to 5mm

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 3601-1, DIN 3771, AS 568A, JIS B 2401

Parent Products

This component is used in the following industrial products

Industrial Grade Ceramic Membrane Filter Element

Porous ceramic filtration component for chemical process separation applications.

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Junction

The electrical connection point within a pH sensor where the reference electrode and measurement electrode meet.

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Engineering Analysis

Risks & Mitigation

Chemical degradation from incompatible fluids
Compression set leading to permanent deformation
Installation damage from improper handling
Thermal degradation exceeding material limits
Incorrect sizing causing leakage or extrusion

FMEA Triads

Trigger: Chemical incompatibility with filtered media
Failure: Swelling, cracking, or hardening of elastomer
Mitigation: Material selection based on chemical compatibility charts and regular inspection

Trigger: Excessive compression during installation
Failure: Permanent deformation and reduced sealing force
Mitigation: Proper gland design with 15-30% compression and use of installation tools

Trigger: Thermal cycling beyond material limits
Failure: Loss of elasticity and seal failure
Mitigation: Select materials with appropriate temperature range and consider thermal expansion of ceramic element

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.10mm on cross-section, ±0.20mm on inner diameter per ISO 3601-1 Class 2

Test Method

Leak testing per ISO 188 (compression set), ASTM D1414 (ozone resistance), and pressure decay testing at 1.5x operating pressure

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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CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of O-Ring Seal

Manufacturer profiles associated with O-Ring Seal.

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Frequently Asked Questions

What material is best for O-rings in ceramic membrane filters?