Double D Blanking Plugs
Double D blanking plugs, also known as keyed hole blanking plugs, strain relief hole plugs, and double-D panel plugs, are specialised nylon components designed to seal unused Double D shaped holes with opposing flat sides in panels, enclosures, and equipment housings. These UL94V-2 rated Nylon 6/6 secure blanking plugs feature a unique keyed profile that prevents rotation whilst providing reliable sealing against dust, moisture, and contaminants in demanding UK industrial applications. Manufactured specifically for blanking off unwanted strain relief mounting holes and keyed openings, these professional-grade plugs deliver superior security compared to standard round blanking solutions.
Extensively used throughout British manufacturing sectors, Double D blanking plugs serve critical functions in automotive production, electrical enclosure assembly, telecommunications equipment, and industrial machinery manufacturing. Their primary advantage lies in their anti-rotation keyed design which ensures permanent positioning and prevents loosening under vibration or mechanical stress. The opposing flat sides create a secure mechanical lock that maintains precise alignment whilst the integrated locking fingers provide tool-free installation into panel thicknesses up to 3.2mm. With exceptional temperature resistance from -40°C to 105°C and ultra-low profile head thickness of just 1.6mm, these components deliver flush finishing and reliable performance across diverse UK applications where secure, permanent hole sealing is essential.
Available Materials and Style Options:
- High-performance UL94V-2 rated Nylon 6/6 construction for superior durability and fire resistance
- Keyed Double D profile with opposing flat sides preventing rotation and ensuring secure positioning
- Integrated flexible locking fingers providing secure snap-fit installation
- Ultra-low profile head design with 1.6mm thickness for flush panel finishing
- Black or white colour finishes suitable for professional visible applications
- Multiple size options accommodating hole diameters from 9.5mm to 50.8mm
- Standard panel thickness compatibility up to 3.2mm maximum
- Tool-free installation and removal capability for maintenance access
Key Features and Benefits:
- Anti-rotation keyed design prevents loosening under vibration and mechanical stress
- Comprehensive size range from 9.5mm to 50.8mm covering standard strain relief mounting holes
- Extended temperature performance rated from -40°C to 105°C for harsh industrial environments
- UL94V-2 flammability rating ensuring compliance with electrical safety standards
- Ultra-thin 1.6mm head thickness providing completely flush panel finishing
- Integrated locking fingers ensure secure retention without additional fasteners
- Superior mechanical security compared to round blanking plugs in high-vibration applications
- Chemical resistance properties suitable for industrial cleaning and maintenance processes
- Tool-free installation reducing labour costs and simplifying assembly procedures
- Permanent sealing solution maintaining panel integrity and IP protection ratings
Common UK Use Cases:
- Automotive manufacturing and assembly - sealing unused strain relief holes in dashboard panels, engine bay components, and chassis assemblies where anti-rotation security is critical
- Electrical control panels and distribution equipment - blanking keyed mounting holes for strain relief connectors and cable entries in switchgear, motor control centres, and industrial control systems
- Telecommunications and data centre equipment - covering unused keyed cable entry points in server racks, junction boxes, and network equipment housings requiring permanent sealing
- Industrial machinery and automation systems - sealing strain relief mounting locations in production equipment, robotic systems, and manufacturing machinery exposed to vibration
- HVAC and building services installations - blanking keyed connector holes in air handling units, control panels, and building management system enclosures throughout UK commercial properties
Related Vital Parts Products:
- Standard round blanking plugs for circular hole applications and general panel finishing
- Flexible rubber blanking plugs for irregular surfaces and variable hole tolerances
- Cable strain relief connectors for active cable management systems
Call Vital Parts:
For quick quotes, same-day dispatch, custom sizes, or bulk discounts, call our sales line on 01233 713 581. Businesses can register for a Vital Parts Business Account to benefit from priority shipping, trade pricing, free product samples, credit accounts, and a dedicated account manager.
Frequently Asked Questions
Double D Blanking Plugs, also known as keyed hole blanking plugs, Double D panel plugs and strain relief hole plugs, are designed to seal unused Double D shaped holes in panels, electrical enclosures and equipment housings. Their keyed profile prevents rotation whilst providing reliable protection against dust, moisture and contaminants.
Unlike standard round Blanking Plugs, Double D Blanking Plugs feature opposing flat sides that lock into Double D shaped holes. This anti-rotation design prevents the plug from turning or loosening under vibration, providing a more secure installation.
Double D Blanking Plugs are manufactured from high-performance UL94V-2 Nylon 6/6, offering excellent strength, chemical resistance and flame-retardant properties for demanding industrial applications.
Yes. Double D Blanking Plugs seal unused panel holes, helping reduce the ingress of dust, dirt, moisture and contaminants whilst maintaining the integrity of electrical enclosures and equipment.
Yes. Their anti-rotation keyed design makes Double D Blanking Plugs ideal for applications exposed to vibration, where standard round plugs may rotate or become loose over time.
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