O-ring / Seals: Temperature Range -40°C to +200°C

Component Specifications

Definition

O-ring seals are torus-shaped mechanical gaskets designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface. In pickup and sensor head applications, they prevent contamination ingress and maintain pressure integrity for sensitive components.

Working Principle

O-rings function by creating a seal through elastic deformation when compressed between mating surfaces. The compression creates radial forces that block fluid or gas passage, with the elastomeric material filling microscopic imperfections in the surfaces.

Materials

Nitrile rubber (NBR), Fluorocarbon (Viton/FKM), Ethylene Propylene Diene Monomer (EPDM), Silicone (VMQ), Perfluoroelastomer (FFKM)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	70-90 Shore A
Inner Diameter	5-500 mm
Pressure Rating	Up to 35 MPa
Temperature Range	-40°C to +200°C
Cross Section Diameter	1.5-10 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

ISO 3601, DIN 3771, AS 568A, JIS B 2401

Parent Products

This component is used in the following industrial products

Pickup / Sensor Head

The detection element of a reference flow sensor that directly interfaces with the fluid or medium to measure flow parameters.

View Product Details

Engineering Analysis

Risks & Mitigation

Chemical degradation from incompatible fluids
Compression set leading to seal failure
Extrusion under high pressure
Thermal expansion/contraction mismatch
Installation damage from sharp edges

FMEA Triads

Trigger: Incorrect material selection for operating environment
Failure: Swelling or cracking leading to leakage
Mitigation: Conduct compatibility testing with all system fluids

Trigger: Excessive compression beyond design limits
Failure: Permanent deformation and loss of sealing force
Mitigation: Use proper gland design per ISO 3601 standards

Trigger: Thermal cycling beyond material limits
Failure: Hardening and loss of elasticity
Mitigation: Select materials with appropriate temperature range for application

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.10 mm on cross-section, ±0.15 mm on inner diameter per ISO 3601

Test Method

Pressure decay testing, helium leak testing, visual inspection per ASTM D1414

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 O-ring / Seals

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

HQSeal

Ningbo, Zhejiang, CN

Also makes: Mechanical Seal, Wave Spring

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “O-Ring Seals”
View source page ↗ hqseal.com · checked 2026-09-03

View profile Send enquiry

Xiamen Xlong Seal Co.,Ltd

Xiamen, Fujian, CN

Also makes: Automotive Components, Silicone Seal Ring

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “Standard O-Ring Seals”
View source page ↗ oring-seal.com · checked 2026-09-05

View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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 causes O-ring failure in sensor heads?

Common causes include chemical incompatibility, excessive compression set, thermal degradation, improper installation, and extrusion under high pressure.

How do I select the right O-ring material?

Consider fluid compatibility, temperature range, pressure requirements, and environmental factors like UV exposure or ozone presence.

What maintenance is required for O-ring seals?

Regular inspection for cracks, swelling, or flattening; proper lubrication during installation; and replacement during scheduled maintenance intervals.

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.

O-ring / Seals