duotight comes with a silicone washer inserted. There should be no need to use thread tape on the threaded portion. Suits 8mm OD hosing in either 4mm or 5mm ID.

duotight - 8mm (5/16) Female x 1/2 Inch BSP Female Thread

$2.95
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duotight comes with a silicone washer inserted. There should be no need to use thread tape on the threaded portion. Suits 8mm OD hosing in either 4mm or 5mm ID.

duotight - 8mm (5/16) Female x 1/2 Inch BSP Female Thread

KL39819

$2.95
Out of stock Estimated Date of Arrival : 30 Sep 2026
Volume pricing
1+ $2.95/ea
10+ $2.20/ea

This adapter fitting is specifically designed to attach 8mm (5/16") outer diameter (OD) hosing to standard 1/2" BSP fittings. It provides a secure, leak-free connection suitable for gas and liquid setups, ensuring smooth and uninterrupted flow throughout your system.

Applications & Compatibility

  • Super Sucker: Attach 8mm OD hose to your Super Sucker Pump
  • Hose to Fitting: Connect 8mm OD hosing directly to 1/2" threaded hardware or fittings.
  • Versatile Integration: Ideal for integrating 8mm tubing into larger 1/2" commercial or homebrew plumbing configurations.

8mm Tubing Compatibility

This 8mm duotight fitting is optimised for use with EVABarrier Dual Barrier Line. It is compatible with:


The duotight Generation 2 Difference

Why settle for standard push-in fittings? duotight Generation 2 represents a massive leap in engineering over traditional acetal fittings.

Dual-Material Double O-Ring Design

The secret to our superior seal is a two-stage system using two different high-quality materials:

  1. EPDM O-Ring: Provides exceptional chemical and gas resistance.
  2. Silicone O-Ring: Maintains its shape and elasticity in sub-zero temperatures.

High-Performance Materials (POK)

Instead of standard Acetal, Generation 2 fittings are made from Polyketone (POK).

  • Higher Chemical Resistance: Withstands harsh brewery cleaners.
  • UV Protection: Won't become brittle over time.
  • Extreme Durability: Rated for over 300psi @ 25°C.

User-Friendly Features

  • Color-Coded Collets: Black denotes 8mm (5/16").
  • Depth Indicators: Includes >| |< indicators so you know the hose is fully seated.
  • No Clamps Necessary: Simply push to seal; push the collet to release.

We recommend using a Tube Cutter to ensure a perfectly straight, burr-free cut. An angled cut is the #1 cause of leaks in push-fit systems.

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Overall rating: 5.0 / 5 from 2 reviews.

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Reviews

Handy

"have it connected to my pump out set up. Love it, pop on pop off easy pesy"

— Eddie h. (5/5)

Exactly as described

"It works"

— Paul G. (5/5)

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