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04MFS-04MFS BULKHEAD UNION

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Description & Features

Designed for through-panel or bulkhead mounting applications, the 04MFS-04MFS Bulkhead Union from Brennan Industries provides a secure, inline connection point where fluid lines pass through a wall, plate, or enclosure. The fitting connects two male face seal (MFS) ends in a straight configuration, allowing lines to be routed cleanly through a structural barrier without additional adapters.

Brennan Industries manufactures this fitting to consistent dimensional and performance standards common to hydraulic line assemblies. The face seal design helps minimize leak paths at the connection interface, making it well suited for hydraulic circuits where fluid integrity is a priority.

SKU: FF2700-04-04

Supplier Part Number (MPN): FS2700-04-04

Specifications

Connection Size 1
1/4 in
Connection Size 2
1/4 in
Connection Type
Male ORFS
Connection Type 1
Male SAE ORFS
Connection Type 2
Male SAE ORFS
Dimension Standards
SAE J1453
Dimensions
1.9 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Union
Hex Size
0.81 in
Material
Steel
Material Construction
AISI 12L14/1045 Steel
Maximum Operating Pressure
9200 psi
Operating Temperature
-40 to 250 deg F
Series
FS2700 Series
Thread Size
9/16-18

Product Questions & Answers (2)

Question by: Harold P on Sep 9, 2025, 5:17 PM
What exactly is this fitting meant to do? Got a line that needs to pass through a steel plate and ain't sure if this is the right piece for that.
Answer by: Customer Support on Sep 10, 2025, 9:06 PM
Running a fluid line through a plate or wall panel is exactly what this fitting handles. It mounts into the hole in your panel and gives you a clean, secure connection point on both sides, so the line passes through without needing extra adapters or awkward routing. Both ends are male face seal, straight through, so you get a solid inline connection right at the barrier.
Question by: Rhonda S on Sep 7, 2025, 1:00 PM
What's the deal with this bulkhead union, exactly? What kinda setup is it for?
Answer by: Customer Support on Sep 8, 2025, 2:30 PM
It's made for running lines through panels or walls. It connects two male face seal ends, so you can get a straight shot through an enclosure without a bunch of extra fittings.

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