18mm/20mm O-Ring Boss Male Protective Cap/Nut | Metric ORB Hydraulic Fitting
SKU 18/20MPN
In stock: 4 available · Ships from Kelowna BC
Verify fitment by part number before ordering.
Match the listed SKU and verified cross-references to your current part number. If fitment is not listed, send AIM Rentals the machine details and current part number before ordering.
18/20MPN — 18mm/20mm Metric O-Ring Boss Male Protective Cap/Nut
The 18/20MPN is an 18mm/20mm O-Ring Boss (metric ORB) male protective cap or plug nut used to protect unused male ORB hydraulic ports from contamination and damage during storage, transport, or service. A simple but essential maintenance item for hydraulic systems. Stocked at AIM Rentals in Kelowna, BC — ships Canada-wide.
Specifications
- SKU: 18/20MPN
- Type: Metric O-Ring Boss Male Protective Cap/Nut
- Thread: 18mm / 20mm metric ORB
- Application: Sealing/protecting unused male ORB hydraulic ports
- Material: Typically steel or high-density plastic
Fitment
Compatible with any hydraulic system using 18mm or 20mm metric O-Ring Boss male port fittings. Common on heavy mobile equipment, construction machinery, and hydraulic systems throughout North America and Canada.
FAQ
What is a metric O-Ring Boss (ORB) fitting?
Metric ORB fittings use a straight thread with an O-ring that seals against a flat face — providing a reliable leak-free connection widely used on European and Asian heavy equipment.
What does MPN stand for in this part number?
MPN stands for Male Protective Nut — it caps off a male metric ORB port to prevent contamination and physical damage when not in use.
Is this a standard hydraulic shop item?
Yes — protective caps/nuts are standard hydraulic fittings used across all types of heavy equipment maintenance and repair.
Is this in stock?
Stocked in Kelowna, BC. Ships Canada-wide.
Fitment data available on request. Email sales@rentwithaim.ca with your machine year/make/model.
Browse all parts for these machines
Ships from Kelowna BC after order review.
Shipping options and totals are shown at checkout.
Transit timing depends on carrier service, destination, and order review.
Review the published shipping and return policies before ordering.
Questions? Contact AIM Rentals.