ORB Port Blanking Plugs

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£1.66

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ORB Port Blanking Plugs – O-Ring Sealed Port Closures

Seal unused O-Ring Boss ports with our aluminium ORB Port Blanking Plugs. Designed for compatible female ORB ports, the male connection retains the plug while the supplied O-ring provides the fluid seal against the mating port.

Why Choose Our ORB Port Blanking Plugs?

O-Ring Boss Sealing

The supplied O-ring seals against the mating ORB port, providing the fluid seal independently of the threaded connection.
Low-Profile Internal Hex Design

An internal hex drive keeps the installed plug compact while allowing straightforward installation and removal with a suitable hex key.
6061-T6 Aluminium Construction

Precision-machined from lightweight 6061-T6 aluminium for an excellent combination of strength and low weight.
Black Anodised Finish

Protects against wear and corrosion while providing a clean, durable finish.

ORB and AN Are Different Connections

Some ORB and AN connections can share the same thread diameter and pitch, but they use different sealing arrangements. ORB connections seal using an O-ring, while AN connections seal on a 37° flare. These plugs are designed specifically for compatible ORB ports and do not have an AN flare seat.

Type: ORB Port Blanking Plug For closing compatible unused female O-Ring Boss ports
Drive Type: Internal Hex Low-profile design for installation with a suitable hex key
Material: 6061-T6 Aluminium Lightweight, high-strength alloy
Finish: Black Anodised Protects against wear and corrosion

Connection 1: ORB Male Seals against the mating port using the supplied O-ring

Available ORB port blanking plug options
Product Code	Connection 1
PLG-PRT-ORB-AL-ORB3	-3 ORB Male 3/8"-24 UNF · O-ring supplied
PLG-PRT-ORB-AL-ORB4	-4 ORB Male 7/16"-20 UNF · O-ring supplied
PLG-PRT-ORB-AL-ORB6	-6 ORB Male 9/16"-18 UNF · O-ring supplied
PLG-PRT-ORB-AL-ORB8	-8 ORB Male 3/4"-16 UNF · O-ring supplied
PLG-PRT-ORB-AL-ORB10	-10 ORB Male 7/8"-14 UNF · O-ring supplied
PLG-PRT-ORB-AL-ORB12	-12 ORB Male 1 1/16"-12 UNF · O-ring supplied
PLG-PRT-ORB-AL-ORB16	-16 ORB Male 1 5/16"-12 UNF · O-ring supplied

ORB and AN connections share the same threads but seal differently. These plugs are designed for O-ring sealed ORB ports and do not have a 37° AN flare.

Oil Systems
Fuel Systems
Coolant Systems
Manifolds
Fluid Blocks
Unused ORB Ports

Free repair or replacement for two years from the date of purchase. Learn more

Frequently Asked Questions

What are ORB port blanking plugs used for?
They are used to close unused or redundant female O-Ring Boss ports in compatible fluid-system components such as manifolds, filter housings, fuel-system components, cooler components and adapters.
How do ORB port blanking plugs seal?
The supplied O-ring creates the fluid seal against the mating ORB port. The threaded connection retains the plug rather than providing the fluid seal.
Is the O-ring included?
Yes. Each ORB port blanking plug is supplied with the correctly sized sealing O-ring.
Do I need thread sealant or PTFE tape?
No. ORB connections seal using an O-ring rather than the threads, so thread sealant or PTFE tape should not be required when installed into the correct mating port.
Are ORB and AN connections interchangeable?
No. Some ORB and AN connections use the same thread diameter and pitch, but their sealing arrangements are different. ORB seals with an O-ring, while AN seals on a 37° flare.
How are the plugs installed?
The plugs feature an internal hex drive and are installed using a correctly sized hex key. Ensure the port, O-ring and sealing surfaces are clean and undamaged before installation.