Metric Port Blanking Plugs - Stainless Steel

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Metric Port Blanking Plugs - Stainless Steel

Seal unused metric fluid ports with our Metric Port Blanking Plugs - Stainless Steel. Precision CNC machined in the United Kingdom from 303/304 stainless steel, these reusable plugs use an O-ring seal for reliable port closure in brake, clutch and other fluid systems.

Why Choose Our Stainless Steel Metric Port Blanking Plugs?

O-Ring Sealed Metric Connection

Designed for compatible female metric ports, using a straight metric thread for retention and an O-ring to provide the fluid seal.
303/304 Stainless Steel

Offers excellent strength and durability for demanding automotive and motorsport applications.
Natural Stainless Steel Finish

The corrosion-resistant natural finish requires no additional coating and provides a clean, durable appearance.
Precision CNC Machined in the UK

Manufactured in the United Kingdom for accurate thread form, consistent dimensions and reliable fitment.
Multiple Metric Thread Sizes

Available in M10 x 1.00, M10 x 1.25 and M12 x 1.00 to suit a range of common fluid-system connections.
Reusable Design

Can be removed and reused provided the threads, sealing surfaces and O-ring remain in good condition.

Choose the Correct Metric Thread

Metric threads with the same nominal diameter can use different thread pitches. Always check both the thread diameter and pitch, as well as the O-ring sealing arrangement of the port, before selecting a blanking plug.

Plug Type: Metric Port Blanking Plug For closing unused female metric fluid ports
Material: 303/304 Stainless Steel Excellent strength and durability
Finish: Natural Stainless Steel Corrosion-resistant
Manufactured In: United Kingdom Precision CNC machined

Connection: Male Metric For installation into a compatible female metric port
Thread Type: Straight Metric Thread provides retention rather than the fluid seal
Sealing Method: O-Ring Seals against a compatible metric port
Reusable: Yes Provided the threads, sealing surfaces and O-ring remain undamaged

Available stainless steel metric port blanking plug sizes
Product Code	Thread
PLG-PRT-MET-SS-M10X100	M10 x 1.00 Male
PLG-PRT-MET-SS-M10X125	M10 x 1.25 Male
PLG-PRT-MET-SS-M12X100	M12 x 1.00 Male

Check the connection before ordering. Match the thread diameter, pitch and O-ring sealing arrangement to the port being blanked.

Brake Systems
Clutch Systems
Fluid Components
Unused Metric Ports

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

Frequently Asked Questions

What are stainless steel metric port blanking plugs used for?
They are used to close unused female metric ports in compatible fluid-system components, providing a removable O-ring sealed closure for maintenance, modifications or permanent installation.
What metric thread sizes are available?
Available sizes are M10 x 1.00, M10 x 1.25 and M12 x 1.00.
How do the metric port blanking plugs seal?
The straight metric thread provides retention while the fluid seal is created by an O-ring against the mating port.
Do metric port blanking plugs require thread sealant?
No. The thread itself does not provide the fluid seal, so thread sealant or PTFE tape should not be required on a correctly matched O-ring sealed metric connection.
Is M10 x 1.00 the same as M10 x 1.25?
No. Although both have a 10 mm nominal thread diameter, they use different thread pitches and are not interchangeable. Always check the thread pitch before ordering.
What are the blanking plugs made from?
They are precision CNC machined from 303/304 stainless steel for excellent strength and durability.
What finish do the stainless steel plugs have?
They have a natural stainless steel finish, providing excellent corrosion resistance without an additional coating.
Where are these blanking plugs manufactured?
They are precision CNC machined in the United Kingdom.
Are these metric port blanking plugs reusable?
Yes. They can be removed and reused provided the threads, sealing surfaces and O-ring remain in good condition. Inspect the O-ring before reuse and replace it if damaged or deteriorated.