Hole Plugs

Image Part Number Description / PDF Quantity Rfq
HPP9 SL080

HPP9 SL080

Alpha Wire

HOLE PLUG 0.598" POLYAMIDE 6 GRY

267

HPP16 SL080

HPP16 SL080

Alpha Wire

HOLE PLUG 0.886" POLYAMIDE 6 GRY

1610106

HPM25 BK080

HPM25 BK080

Alpha Wire

HOLE PLUG 0.984" POLYAMIDE 6 BLK

1204

HPM12 SL080

HPM12 SL080

Alpha Wire

HOLE PLUG 0.472" POLYAMIDE 6 GRY

310

HPM20 BK080

HPM20 BK080

Alpha Wire

HOLE PLUG 0.787" POLYAMIDE 6 BLK

532

HPP11 SL080

HPP11 SL080

Alpha Wire

HOLE PLUG 0.732" POLYAMIDE 6 GRY

1063

HPP7 SL080

HPP7 SL080

Alpha Wire

HOLE PLUG 0.492" POLYAMIDE 6 GRY

590

HPM32 BK080

HPM32 BK080

Alpha Wire

HOLE PLUG 1.260" POLYAMIDE 6 BLK

62266

HPP21 SL080

HPP21 SL080

Alpha Wire

HOLE PLUG 1.114" POLYAMIDE 6 GRY

175

HPP11 BK080

HPP11 BK080

Alpha Wire

HOLE PLUG 0.732" POLYAMIDE 6 BLK

289

HPP13 SL080

HPP13 SL080

Alpha Wire

HOLE PLUG 0.803" POLYAMIDE 6 GRY

1075

HPM16 SL080

HPM16 SL080

Alpha Wire

HOLE PLUG 0.630" POLYAMIDE 6 GRY

807

HPM12 BK080

HPM12 BK080

Alpha Wire

HOLE PLUG 0.472" POLYAMIDE 6 BLK

569

HPM16 BK080

HPM16 BK080

Alpha Wire

HOLE PLUG 0.630" POLYAMIDE 6 BLK

440162

HPP29 SL080

HPP29 SL080

Alpha Wire

HOLE PLUG 1.457" POLYAMIDE 6 GRY

621

HPM32 SL080

HPM32 SL080

Alpha Wire

HOLE PLUG 1.260" POLYAMIDE 6 GRY

404167

HPM20 SL080

HPM20 SL080

Alpha Wire

HOLE PLUG 0.787" POLYAMIDE 6 GRY

24974

HPM25 SL080

HPM25 SL080

Alpha Wire

HOLE PLUG 0.984" POLYAMIDE 6 GRY

132

HPP7 BK080

HPP7 BK080

Alpha Wire

HOLE PLUG 0.492" POLYAMIDE 6 BLK

814

HPP21 BK080

HPP21 BK080

Alpha Wire

HOLE PLUG 1.114" POLYAMIDE 6 BLK

96956

Hole Plugs

1. Overview

Hole plugs (also known as blanking plugs or hole covers) are mechanical fasteners designed to seal, protect, or provide structural integrity to openings in various materials. They play a critical role in preventing fluid leakage, dust ingress, vibration damping, and maintaining aesthetic finishes in industrial and consumer applications.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Expansion PlugsExpand radially to grip hole wallsAutomotive frame sealing
Threaded PlugsMechanical screw-in retentionHydraulic system ports
Elastomeric PlugsFlexible rubber compression sealElectrical conduit protection
Quick-Release PlugsTool-free installation/removalAerospace panel access

3. Structure and Components

Typical hole plug assemblies consist of: - Body: Cylindrical or tapered base (metal/plastic/rubber) - Retention Features: Threads, barbs, or expanding segments - Sealing Interface: O-ring, lip seal, or compressive material - Head Style: Flush, protruding, or recessed for tool engagement

4. Key Technical Parameters

ParameterSignificance
Material CompatibilityCorrosion resistance and chemical exposure
Size RangeMetric/Imperial diameter specifications
Temperature ResistanceOperating range (-40 C to +150 C typical)
Insertion ForceInstallation effort requirements
Retention Strength50-500N pull-out resistance

5. Application Fields

Key industries include: - Automotive (engine bay sealing) - Electronics (panel cutout protection) - Construction (concrete formwork plugs) - Medical equipment (sterile barrier systems) - Marine (hull penetration sealing)

6. Leading Manufacturers

ManufacturerRepresentative Product
3MScotch-Weld Plastic Welding Kits
Saint-GobainCalvasil silicone sealing plugs
Illinois Tool WorksBossard elastic retention plugs
RoxtecMultidiameter cable transit seals

7. Selection Guidelines

Consider: - Environmental exposure (UV, chemicals) - Required IP rating (IP54/IP67) - Installation frequency - Substrate material (metal, plastic, composite) Case Study: Automotive manufacturers use nylon expansion plugs (PA66) with integrated gaskets for wheel well openings, providing IP68 protection while reducing assembly time by 30%.

8. Industry Trends

Emerging developments: - Lightweight composite materials - Integrated smart sensors for seal integrity monitoring - Biodegradable polymer solutions - 3D-printed custom geometries - Anti-vibration designs for EV battery enclosures

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