Gasket Groove: Groove Width 1.2-2.5 mm, Taper Angle 1-3 degrees

Component Specifications

Definition

A precisely machined groove feature in polycarbonate injection molds that houses elastomeric gaskets to create hermetic seals between lens housing components, preventing moisture ingress and maintaining optical clarity in demanding environments.

Working Principle

The groove provides geometric confinement for gasket materials during injection molding, allowing the polycarbonate to flow around and encapsulate the gasket positioning. During mold closure, the groove aligns with mating surfaces to compress the gasket, creating a reliable seal through controlled deformation and material memory.

Materials

Tool steel (typically H13 or P20) with hardness 48-52 HRC, surface finish Ra 0.4-0.8 μm, corrosion-resistant coatings optional.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Taper Angle	1-3 degrees
Groove Depth	0.8-1.8 mm
Groove Width	1.2-2.5 mm
Corner Radius	0.2-0.5 mm
Surface Finish	16-32 μin Ra
Position Tolerance	±0.05 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 20457, DIN 16742

Parent Products

This component is used in the following industrial products

Polycarbonate Injection Molded Lens Housing

This precision injection molded component is designed to house and protect optical elements in industrial applications.

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Engineering Analysis

Risks & Mitigation

Insufficient groove depth causing gasket extrusion
Sharp corners creating stress concentrations
Poor surface finish leading to seal leakage
Thermal expansion mismatch between mold and polycarbonate

FMEA Triads

Trigger: Inadequate draft angle in groove design
Failure: Part sticking during ejection causing groove deformation
Mitigation: Implement 1-3° draft angles and optimized ejection sequence

Trigger: Tool steel wear in high-volume production
Failure: Groove dimension drift beyond tolerance
Mitigation: Regular dimensional inspection and preventive maintenance schedule

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

ISO 2768-mK for general dimensions, ISO 20457 for plastic mold components

Test Method

Coordinate measuring machine (CMM) verification, helium leak testing for seal validation

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

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Supplier transparency

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Manufacturers of Gasket Groove

Manufacturer profiles associated with Gasket Groove.

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Frequently Asked Questions

What tolerance is required for gasket grooves in optical molds?

Position tolerance of ±0.05 mm and depth tolerance of ±0.02 mm are typical for optical applications to ensure proper gasket compression and sealing.

How does groove design affect polycarbonate flow?

Proper taper angles (1-3°) and corner radii (0.2-0.5 mm) prevent flow hesitation and weld lines that could compromise structural integrity.

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.

Gasket Groove