Coupler Flanges

€40.00€50.20Excl. VAT — added at checkoutIncl. 25.5% VAT (Finland) — final VAT is calculated at checkout

Ordered for you — ships in about 7 business days

Delivery across Europe from Finland, other countries on request
Not sure it fits your build? Ask us — we build on the same platform.

Description

Have you ever needed a longer watertight enclosure? Use the Coupler Flange to connect any two Watertight Enclosure tubes of the same diameter together. You can mix acrylic and aluminum tubes, different lengths, or chain multiple tubes using additional Coupler Flanges.

The Coupler Flange is basically the standard flange with the sealing interface mirrored on both sides. It has the same features: made of anodized aluminum, dual radial O-rings for reliable high-pressure sealing, PTFE locking cords, anti-rotation feature, and internal RAILS mounting points.

They’re simple to use, just attach a tube at either end and assemble the rest of your enclosure as normal. The Coupler Flange doesn’t affect the depth rating of your tubes, just keep in mind the lowest-rated component sets the depth rating for the whole assembly, and very long builds should use external support.

Tubes and coupler flange with the locking cords installed.

What's in the box

1 x Flange (based on selection)
4 x Radial O-ring
2 x PTFE Locking Cord
2 x Locking Cord Handle and Set Screw
1 x Single-use Packet of Molykote 111 Compound

Technical details

Specifications

Series Diameter	Radial Seal O-ring	Flange OD (E)	Piston Diameter (F)	Piston Length (G)	Overall Length (H)	Inner Mounting Hole Circle (J)	Weight	Part Number
50 mm (2")	-031 Buna-N 70A	58.0 ± 0.1 mm	50.95 ± 0.05 mm	15.5 ± 0.1 mm	43 ± 0.1 mm	43.0 ± 0.1 mm	60 g	BR-106247
75 mm (3")	-150 Buna-N 70A	88.9 ± 0.1 mm	79.95 ± 0.05 mm	19.1 ± 0.1 mm	54 ± 0.1 mm	68.6 ± 0.1 mm	138 g	BR-106256
100 mm (4")	-154 Buna-N 70A	114.3 ± 0.1 mm	103.95 ± 0.05 mm	19.1 ± 0.1 mm	54 ± 0.1 mm	94.0 ± 0.1 mm	189 g	BR-106257
Material: Aluminum 6061-T6, type III anodized for all flanges
Locking Cord Diameter (D): 2.6 ± 0.4 mm for all flange sizes
Inner Mounting Holes (I): M3x0.5 for all flange sizes