Sealing Gasket or O-Ring: Temperature Range -40°C to 250°C

Q: What is the difference between a sealing gasket and an O-ring?

Gaskets are typically flat seals used between static flanges, while O-rings are toroidal seals that fit into grooves and create seals through radial compression. O-rings provide better sealing for dynamic applications.

Q: How do I select the right material for my sample interface?

Consider chemical compatibility with your process media, operating temperature range, pressure requirements, and regulatory compliance. Common materials include NBR for general purpose, FKM for chemical resistance, and EPDM for steam/water applications.

Q: What causes O-ring failure in sample interfaces?

Common failure causes include chemical degradation, extrusion under high pressure, compression set (loss of elasticity), thermal degradation, improper installation, and incorrect sizing.

Component Specifications

Definition

A precision sealing component designed for sample interface applications in industrial equipment, creating a hermetic seal between mating surfaces to prevent fluid/gas leakage, maintain pressure integrity, and prevent contamination of samples or process media. Engineered to withstand specific temperature, pressure, and chemical exposure conditions.

Working Principle

Creates a compression seal through elastic deformation when compressed between mating surfaces, filling microscopic imperfections to form a leak-proof barrier. The sealing force is generated by the material's elasticity and the compression load applied during assembly.

Materials

Nitrile rubber (NBR), Fluorocarbon (Viton/FKM), Ethylene Propylene Diene Monomer (EPDM), Silicone (VMQ), Perfluoroelastomer (FFKM), Polytetrafluoroethylene (PTFE). Material selection based on chemical compatibility, temperature range (-40°C to 250°C), and pressure requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	70-90 Shore A
Compression Set	<20%
Pressure Rating	Up to 1000 psi
Tensile Strength	10-20 MPa
Temperature Range	-40°C to 250°C
Elongation At Break	150-400%

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 3771, AS 568A, SAE J515

Parent Products

This component is used in the following industrial products

Sample Interface

Interface component that facilitates the introduction, positioning, and secure coupling of samples to the spectroscopic analyzer for measurement.

View Product Details

Engineering Analysis

Risks & Mitigation

Chemical degradation
Compression set
Extrusion failure
Thermal degradation
Installation damage
Incompatible material selection

FMEA Triads

Trigger: Chemical incompatibility with process media
Failure: Swelling, cracking, or degradation of seal material
Mitigation: Conduct chemical compatibility testing, select appropriate material grade, implement material verification procedures

Trigger: Excessive compression or improper installation
Failure: Compression set, seal extrusion, or permanent deformation
Mitigation: Follow manufacturer installation guidelines, use proper compression tools, verify groove dimensions, implement torque control

Trigger: Temperature exceeding material limits
Failure: Thermal degradation, hardening, or loss of elasticity
Mitigation: Select high-temperature materials, implement temperature monitoring, use thermal barriers, regular maintenance inspection

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.10 mm for cross-section, ±0.20 mm for inner diameter

Test Method

ISO 3601-3 for dimensional verification, ASTM D1414 for compression set, ASTM D395 for compression deflection

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.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Sealing Gasket or O-Ring

Manufacturer profiles associated with Sealing Gasket or O-Ring.

Sourcing Sealing Gasket or O-Ring from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.

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

Related Components

Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Seal Groove

Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

Frequently Asked Questions

What is the difference between a sealing gasket and an O-ring?