Tylox® MIB Series Connectors

Mechanically installed “boot” connectors for concrete structures Boot-Style connectors... flexible enough to meet your most rigid standards


Designed to provide a watertight seal between a pre-formed hole (cored or cast-in) in a concrete structure and a connecting pipe, all Tylox® flexible, rubber, boot-style connectors:

  •  Are designed to meet or exceed the requirements of ASTM C923 - 13 psig water-tight sealing in straight alignment and 10 psig water-tight sealing at 7° axial deflection
  •  Accommodate variation in hole sizes, through the use of an adjustable hoop
  •  Allow for repeated installation and removal, without damaging the connector
  •  Are quick and easy to install
  •  Are easily installed, and/or removed, from either the interior or exterior of the concrete structure
  •  Are manufactured in a variety of hole-size / pipe-size combinations to fit most cored/formed hole sizes 7” thru 20”, and connecting pipe O.D.’s from 1.80” thru 18”
  •  Are supplied, as standard, with high-grade, 304 Series, Stainless Steel Shield, Hoop and Clamp for maximum corrosion resistance

Size Selection

Please refer to the Selection Guide located in the "Related Resources" section of this page.


Tylox® flexible, rubber, boot connectors consist of 5 main components:

  •  Sleeve: The heart of the boot connector, the sleeve is designed for flexibility in all dimensions, to accept relative movement between the pipe and the structure. Sleeves are designed for use with either single or dual take-up clamps.
  •  Hoop: The brawn of the boot connector, the hoop is manufactured from 304 Series, Stainless Steel; and is roll formed for increased radial strength. An expansion mechanism
  •  Shield: The 304 Series, Stainless Steel shield provides protection between the rubber sleeve and the hoop expansion mechanism. It also gives an added amount of interference between the hoop and sleeve, at the adjustment point, ensuring full 360 degree sealing between the sleeve and the structure wall.
  •  Clamp: Manufactured from 304 Series, Stainless Steel, the clamp is used to compress the rubber sleeve around the connecting pipe, forming a watertight seal. Clamps are available in either standard or quick adjustment (jet) styles.
  •  Adjustment Mechanism: The adjustment mechanism can be one of three types - Cobra, Adjustable or Toggle - and is used to expand the O.D. of the hoop, inside the rubber sleeve, after they have been inserted into the hole in the structure. The force exerted by the expanded hoop both mechanically clamps the sleeve into the structure, and deforms the rubber against the concrete, forming a watertight seal.

Materials and Identification

Tylox® MIB style connectors are manufactured from synthetic rubber compounds, to meet the material requirements of ASTM C923.

Connectors are available for “Standard” or “Oil-resistant applications. Oil-resistant connectors will have an orange dot on the rubber molding.
Other materials and specifications may be available as custom order. please consult your Hamilton Kent representative regarding your specific requirements.

Pressure Rating

Tylox® MIB style connectors are designed for water-tight connections in accordance with ASTM C923 - 13 psig water-tight sealing in straight alignment and 10 psig water-tight sealing at 7o axial deflection.


Tylox® MIB style connectors are not WHIMIS listed.

Tylox® MIB style connectors are made from crosslinked, polymeric rubber, which is not considered a health hazard. As with any rubber product, the connector may smolder or burn when exposed to a naked flame. Fire-fighters should wear self-contained, positive-pressure, or pressure-demand, breathing apparatus; and utilize water-spray, air-foam, dry chemical or CO2 type extinguishing media.

Storage and Handling

Proper care of the connector prior to installation will ensure maximum ease of installation and maximum sealing properties of the connector.

Connectors must not be stored near any electrical equipment that produces ozone.

All connectors must be protected from harmful substance such as dirt, mud, dust and grit.

All connectors, other than oil-resistant connectors, must be protected from contact with solvents and petroleum based greases and oils.


Detailed installation instructions can be found in the .pdf file in the "Related Resources" section of this page.

Product Benefits

  •  Three varieties available
  •  Meet ASTM C923 specifications
  •  Suitable for 2” thru 18” connecting pipes
  •  Standard and Oil-Resistant versions available