Superseal Straight Adaptor (MFL Thread)

Superseal Straight Adaptor (MFL Thread)
Disclaimer: All images are for illustrative purposes only.

You will also need:

Locking Clip

Locking Clip

Locking Clip to prevent accidental pipework disconnection.

Quickly and securely connects stainless steel and polished metal pipe/tube to a MFL type connection

John Guest superseal straight adaptor (MFL Thread) fitting connects stainless steel and other polished metal pipe/tube to a MFL type connection. Fast and simple to install, John Guest push-fit fittings create an instant push-fit connection and leak tight seal without the need for tools, hot works or sealing agents.

The unique collet locking design firmly and securely holds the pipe in place without deforming the pipe or restricting flow. The superseal provides extra grip and the hand-operated nut and wedge plastic washer applies pressure on the collet and double nitrile O-Rings, ensuring the stainless-steel teeth bite firmly onto the pipe, while compressing the O-Rings to enhance the seal.

The fittings are manufactured from acetal, are corrosion resistant and fully demountable, improving system performance and reducing system downtime during maintenance. Manufactured in grey push-fit acetal copolymer, the fitting is suitable for potable liquids, foodstuff, inert gas and intermittent hot water applications. All John Guest fittings are manufactured and assembled in the UK.

Features and benefits

  • Nitrile food grade O-ring for potable liquids and foodstuff (not suitable for air, pneumatic or vacuum applications)
  • Superseal feature provides extra grip on stainless steel and other hard polished metal pipe/tube
  • Instant push-fit connection with hand-tighten nut for added compression
  • Connect, disconnect and reconnect in seconds without tools
  • No scale build up improves performance and equipment lifespan
  • Superior flow characteristics


BSI Thermo Pipes and Fixings accredited
WRAS approved product
SKUDescriptionSuperseal OD ″MFL ″Accreditations
SM0108F4SJohn Guest Superseal Straight Adaptor (MFL Thread) 5⁄16″ × 1⁄4″5⁄161⁄4