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Seal/O-ring Component – Machinery and Equipment Manufacturing

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

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

Standards

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

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Seal/O-ring.

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.

View Product Details

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

Interchangeable Parts

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

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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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.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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