Duotight Push-In Fitting - 8 mm (5/16 in.) Joiner

Duotight Push-In Fitting - 8 mm (5/16 in.) Joiner

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This Duotight joiner fitting is compatible with EVABarrier 8 mm OD Tubing (D1717 & D1718).
Duotight fittings are high-quality push-in fittings that seal tight and offer superior sealing capacity due to the double O-ring sealing design.
High Performance Double O-Ring Design:
The secret to Duotight’s superior sealing performance comes from the fact that they use not one, but two high-quality EPDM O-rings.  The double O-ring means they have literally twice the sealing surface when compared with other push-in fittings.  This makes them more reliable and significantly reduces the chance of leakage.
The double O-ring system also means that tubing can be bent at a much tighter radius without causing leaking issues, which can be an issue with other fittings.  This combination of factors makes Duotight the most reliable push-in fittings on the market.
EPDM offers excellent chemical resistance for a longer life span. When compared with silicone and vinyl, EPDM has much better gas transmission rates, better wear resistance, and is BPA-free.
No Clamps Necessary!
We recommend cutting your tubing straight, not on an angle, to ensure the line forms a complete seal. To remove the fitting simply push in the collet and the hose can be removed.
  • Insert tubing and firmly push to connect
  • Easily release tubing by pushing in the collet
  • Suitable for both gas & beverage applications
  • Made from food-grade acetal plastic
  • Double O-rings made from highly chemical resistant EPDM
  • Locking teeth made from stainless steel
  • Pressure rated to 150 psi
  • Temperature rated to 212°F (100°C)

Please note: exposure to chlorine will degrade the acetal plastic and stainless steel these fittings are made from. Do not use in contact with bleach or other chlorinated cleaning chemicals.

Kegland Part number: KL02370

Item # DUO108
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.05 LBS
Community Q&A

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Why did you choose this?
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To set up my kegging solution
Steven Simpkins on Oct 12, 2022
Great item
Patrick S on Jun 13, 2022
To set up my kegging solution
Steven Simpkins on Oct 12, 2022
For quick connections
Troy P on Jun 28, 2022
Great item
Patrick S on Jun 13, 2022
Join two lines of same size
Philip A on May 24, 2022
To plug a pressure gauge into the end of a hose.
John Rettner on Apr 8, 2022
Pressurize fermentation
Robert F on Feb 8, 2022
Help with pressure transfer while kegging
Peter Place on Jan 22, 2022
System compatibility
Gerald H on Sep 19, 2021
Want extras
Nicholas C T on Jun 3, 2021
i need it
david Vepkhvadze on May 26, 2021
Just started using Duotight products and they work really well!
Chris Dornbach on May 21, 2021
simple fast connections
Brandon M on May 19, 2021
Need for closed loop transfer
Lawrence T on Apr 30, 2021
Convenience separating tubing
Brett C on Feb 3, 2021
Hose lonely, wants friend.
Brian S on Jan 7, 2021
Excellent reputation
Richard Anderson on Dec 23, 2020
For refrigerator waterline repair
Nathan J on Nov 25, 2020
It was on my son's Christmas wish list.
Karen V on Nov 17, 2020
In case I need it
Robert D C on Nov 4, 2020
To join tubing
Tom J on Sep 21, 2020
James Clark on Jul 3, 2020
Part of DuoTight manifold build
Joseph M on Jun 12, 2020
For O2 flow meter
Joseph M on Jun 10, 2020
no urgent need, but I am converting to all duotight and got these as "just in case"
Matthew S on Jun 6, 2020
fits 5/16
Robert S on Jan 6, 2020
Setting up new draft system
Joseph M on Dec 10, 2019
I use Duotight, JG and DMfit PTC fittings all through my brewery where possible. Love 'em!
DAVID T. on Dec 7, 2019
just in case
Mrob on Nov 12, 2019
Saw a youtube video using this
Hoping these connections in the tower are will be easier to work
Wayne M on Aug 28, 2019
Superior Duotight double o-ring sealing
Chris on May 2, 2019
Much easier for adding on draft line
Robert Zimmer on Apr 30, 2019
For quick connections
Troy P on Jun 28, 2022
Join two lines of same size
Philip A on May 24, 2022
Could you use duo tight connectors on this filter instead of the barbs and hose clamps?
Ross Sigworth on Sep 3, 2020
Duotight Push-In Fitting - 8 mm (5/16 in.) Joiner
Duotight Push-In Fitting - 8 mm (5/16 in.) Joiner
Plate Filter
Plate Filter
BEST ANSWER: These will work downstream but the barbs are molded into the brittle plastic so there is no way to attach those fittings.

5.0 / 5.0
1 Review
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Rated 5 out of 5
Handy for adding a few feet to a foaming draft line. I also will daisy chain several sections of line for cleaning, rather than cleaning them one at a time.
March 11, 2021
over 3 years ago