Parker PT-00409 Hydraulic Hose Coupler Dust Cap 12mm

Product Description

The PARKER PT-00409 is a male hydraulic hose coupler dust cap designed to protect open coupler ports from contamination, debris, and moisture during storage, transport, or system downtime. Constructed from steel, this cap fits 12 mm (3/4 inch) hydraulic hose couplers and provides a straightforward mechanical seal to maintain fluid cleanliness and prevent damage to coupler sealing surfaces. Hydraulic technicians and fluid power service professionals install these caps as part of standard port protection practice on mobile and stationary hydraulic systems.

This dust cap is suited for use on hydraulic hose assemblies and coupler bodies where a 12 mm male fitting interface is present. It is commonly used in agricultural, construction, industrial, and mobile equipment applications where hydraulic lines are frequently disconnected and reconnected. Keeping coupler faces capped during service intervals reduces the risk of contaminated fluid entering the system and extends the service life of coupler seals and valve components.

Key Features

• Steel construction provides durability and resistance to jobsite handling
• Male shaft type fits standard 12 mm hydraulic coupler ports
• Protects coupler sealing surfaces from contamination during disconnect
• 3/4 inch hose diameter compatibility for common hydraulic line sizes
• Sold in a package quantity of 5 for typical service and fleet maintenance needs

Compatibility

Designed as an OEM-style replacement dust cap for male hydraulic hose couplers with a 12 mm port size and 3/4 inch hose diameter fitment.

Installation Notes

Hydraulic fluid power technicians install dust caps as a protective measure whenever coupler connections are broken. Always depressurize the hydraulic circuit and relieve residual line pressure before disconnecting hoses or installing caps. Ensure the coupler face is clean and free of debris before threading the cap into place. Follow applicable equipment manufacturer service procedures and industry hydraulic safety standards during all service work.