Midland Industries D0304-C-L12 Din Tube Cap L12

Product Description

The MIDLAND INDUSTRIES D0304-C-L12 is a DIN-standard tube cap designed to seal hydraulic tube lines at an L12 female metric swivel connection. Machined from steel with a trivalent chromium zinc-plated finish, it provides corrosion resistance in demanding hydraulic environments. The cap threads onto an M18 x 1.5 metric thread and carries an anticipated pressure rating of 31.5 MPa. Conforming to DIN 2353 and ISO 8434-1 dimension standards, it is a direct-fit component for steel metric compression fitting assemblies used by hydraulic technicians and fluid power specialists in industrial and mobile equipment applications.

This tube cap is suited for sealing open hydraulic tube ports during system service, storage, or staged installation. It is commonly used on steel metric compression fitting systems in industrial machinery, mobile hydraulics, and fluid power circuits where L12 series fittings are specified. Its compact envelope makes it practical for tight plumbing configurations where port access is limited.

Key Features

• L12 female metric swivel connection for secure port sealing
• M18 x 1.5 thread size per DIN 2353 and ISO 8434-1 standards
• Anticipated pressure rating of 31.5 MPa for high-pressure hydraulic service
• Trivalent chromium zinc-plated steel construction for corrosion resistance
• Compact geometry: approximately 0.8 inches height, 0.8 inches length, 0.9 inches width

Compatibility

Designed as an OEM-style replacement or service component for D0304-C series DIN tube cap assemblies using L12 female metric swivel fittings conforming to DIN 2353 and ISO 8434-1 standards.

Installation Notes

Installation is typically performed by licensed hydraulic or fluid power technicians. Depressurize and isolate the hydraulic circuit fully before removing or capping any fitting. Verify thread engagement is complete and torque to the fitting manufacturer's specification using an appropriate metric wrench. Do not overtighten, as this can damage the swivel seat and compromise the seal.