INDUSTRY COMPONENT

Sealing Gasket / O-Ring Groove

Precision-machined groove in weir plates and nozzle bodies designed to securely hold O-rings or sealing gaskets for fluid containment.

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Component Specifications

Definition
A precisely engineered recess or channel machined into the mating surfaces of weir plates and nozzle bodies in industrial equipment. This groove provides a controlled compression zone for elastomeric O-rings or flat gaskets, creating a reliable static seal that prevents fluid leakage between connected components under varying pressure and temperature conditions.
Working Principle
The groove creates a confined space where the O-ring or gasket is compressed between two mating surfaces. When properly dimensioned, this compression causes the elastomeric material to deform and fill microscopic imperfections in the metal surfaces, creating a barrier against fluid passage. The groove geometry controls compression percentage, prevents extrusion under pressure, and maintains seal integrity throughout thermal expansion cycles.
Materials
Typically machined from the same base material as the parent component: stainless steel (304, 316), carbon steel, aluminum alloys, or engineered plastics. Groove surfaces often receive finishing treatments like polishing, plating, or coating to enhance seal compatibility and corrosion resistance.
Technical Parameters
  • Corner Radii 0.1-0.2 mm minimum
  • Groove Depth 0.7-0.9 times O-ring cross-section diameter
  • Groove Width 1.2-1.5 times O-ring cross-section diameter
  • Surface Finish Ra 0.8-3.2 μm (32-125 μin)
  • Groove Bottom Finish Smooth, free of tool marks
  • Dimensional Tolerance ±0.05 mm for critical applications
Standards
ISO 3601-1, ISO 3601-3, AS 568A, DIN 3771, SAE AS 4716

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Sealing Gasket / O-Ring Groove.

O-ring groove design gasket channel weir plate sealing nozzle body seal fluid containment static seal groove industrial sealing solutions Sealing Gasket / O-Ring Groove Sealing Gasket / O-Ring Groove in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Weir Plate / Nozzle Body

The structural component that forms the flow control surface in an overflow weir or nozzle assembly.

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Engineering Analysis

Risks & Mitigation
  • Insufficient compression leading to leakage
  • Excessive compression causing seal damage
  • Groove contamination preventing proper seating
  • Thermal expansion mismatch
  • Chemical incompatibility between seal and groove material
FMEA Triads
Trigger: Incorrect groove dimensions
Failure: Seal leakage or premature failure
Mitigation: Implement dimensional verification with go/no-go gauges, maintain machining tool calibration, follow standardized groove design charts
Trigger: Surface defects or contamination
Failure: Fluid leakage through micro-channels
Mitigation: Implement cleaning protocols before assembly, use protective caps during storage, specify surface finish requirements in drawings
Trigger: Material incompatibility
Failure: Corrosion or chemical attack compromising seal integrity
Mitigation: Material compatibility testing, protective coatings, material certification for corrosive environments

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
ISO 286-1 tolerance grades IT7-IT9 for critical dimensions, geometric tolerances per ISO 1101
Test Method
Helium leak testing per ASTM E493, pressure decay testing, visual inspection per ASME B46.1, coordinate measuring machine (CMM) verification

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 is the optimal compression percentage for O-rings in these grooves?

Typically 15-30% compression for static seals, depending on material and application. Higher compression provides better sealing but increases friction and potential for extrusion.

How do I prevent O-ring extrusion in high-pressure applications?

Use backup rings, reduce clearance gaps, select harder elastomers, or design with stepped or dovetail groove geometries that mechanically restrain the seal.

What surface finish is required for reliable sealing?

32-125 μin Ra (0.8-3.2 μm) is typical. Too smooth can cause adhesion; too rough allows leakage paths. Directional polishing should follow fluid flow direction.

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.

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