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JP09 Untied Rubber Bellows

Now Available With Precision Fit Flexible Lagging Jackets To Suit JP09.


Untied rubber bellows consisting of nitrile liner and neoprene cover, with synthetic fibre reinforcement body and steel reinforced collar. Fitted with zinc plated carbon steel swivel flanges drilled to BS. 4504 NP16.


Stourflex untied rubber bellows are designed to reduce noise and vibration imposed on pipework from pumps and reciprocating machinery. They are suitable for fuel oil, diesel and petroleum applications.

  • Maximum working temperature 60ºC.
  • Maximum working pressure 16 Bar.
  • Sizes 32mm – 300mm.
  • Maximum working pressure 6 Bar.
  • Sizes 350mm – 400mm.
  • Stourflex rubber bellows should not be used at both their maximum working temperature and pressure respectively.
  • Maximum test pressure = 1.5 x working pressure or 1.5 x flange rating, whichever the lower.


Stourflex are now able to offer a tailor made flexible lagging jacket to help reduce heat gains & condensation on CHW systems. Please ask for more information.

*We would not recommend the insulation of rubber bellows being used on hot water or heating applications as this can drastically reduce the life expectancy of the bellows leading to premature failure.

Please ask for pricing or more information!

Download data sheet
JP01 rubber bellows

our technical specifications

Our JP09 Untied Rubber Bellows specifications

Part numberN.B. (mm)Installed Length (mm)Compression (mm)Extension (mm)Lateral (mm)Angular
JP09-32-1632130 / 1501391315°
JP09-40-1640130 / 1501391315°
JP09-50-1650130 / 1501391315°
JP09-65-1665130 / 1501391315°
JP09-80-1680130 / 1501391315°
JP09-100-16100130 / 1501391315°
JP09-125-16125130 / 1501391315°
JP09-150-16150130 / 1501391315°
JP09-200-16200130 / 2051391315°
JP09-250-16250130 / 2051391315°
JP09-300-16300130 / 2051391315°

Supplied length may vary. Tolerance +/-5%

Where vacuum conditions or pressures and temperatures above those stated exist, please check with us the suitability of and effects on service life of Stourflex products.

Alternative flange drillings and materials are available on request.

Stourflex products should be installed in accordance with our fitting instructions.

Stourflex rubber bellows should be periodically inspected and replaced if any deterioration is evident.

Download data sheet