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

Component Specifications

Definition

A toroidal-shaped elastomeric seal designed to create a static or dynamic barrier against fluid or gas leakage in mechanical systems, specifically used in drain valves to prevent unwanted discharge and maintain system integrity under varying pressure and temperature conditions.

Working Principle

Works by compression between mating surfaces, creating a sealing force that deforms the O-ring to fill microscopic gaps, preventing fluid passage through elastic recovery and surface contact pressure.

Materials

Nitrile rubber (NBR), Fluorocarbon (FKM/Viton), Ethylene Propylene Diene Monomer (EPDM), Silicone (VMQ), Polyurethane (PU) - selected based on chemical compatibility, temperature range (-40°C to 200°C), and pressure requirements.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	70-90 Shore A
Inner Diameter	5-500 mm
Pressure Rating	Up to 40 MPa static, 15 MPa dynamic
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, AS 568A, JIS B 2401, DIN 3771

Parent Products

This component is used in the following industrial products

Drain Valve (optional)

An optional valve installed on an air distribution manifold to drain accumulated condensate or liquids from the system.

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Engineering Analysis

Risks & Mitigation

Chemical incompatibility causing swelling/cracking
Extrusion under high pressure
Compression set leading to seal failure
Installation damage from sharp edges
Thermal degradation outside operating range

FMEA Triads

Trigger: Incorrect material selection for fluid exposure
Failure: Chemical degradation and seal leakage
Mitigation: Verify chemical compatibility charts and conduct material testing

Trigger: Excessive clearance in gland design
Failure: Extrusion under pressure causing seal damage
Mitigation: Implement backup rings and maintain proper gland dimensions per standards

Trigger: Improper installation technique
Failure: Cutting or twisting during assembly
Mitigation: Use installation tools, chamfer sharp edges, and follow proper procedures

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

Compression set testing per ASTM D395, fluid immersion testing per ASTM D471, leak testing under operational 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

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 Seal/O-ring

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

Hangzhou Riji Technology Co. Ltd.

Hangzhou, Zhejiang, CN

Also makes: Brake Caliper, Truck Chassis, Transmission and 4 more

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

Listed there as: “Oil Seal, Valve Seal, O RING”
View source page ↗ mtosir.com · recorded 2026-09-15

View profile Send enquiry

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

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Frequently Asked Questions

What causes O-ring failure in drain valves?

Common causes include chemical degradation, extrusion under high pressure, improper installation damage, thermal aging, and compression set from prolonged static sealing.

How do I select the right O-ring material?

Consider fluid compatibility, temperature range, pressure conditions, and dynamic/static application requirements - consult chemical resistance charts and manufacturer specifications.

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.

Seal/O-ring