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Suction cup BL20-2 Silicone FCM, G1/8" male, with mesh filter, BL20-2.21.02AB


Part no. BL20-2.21.02AB

  • The silicone material complies with FDA 21 CFR 177.2600 & EU 1935/2004.
  • Suitable for level adjustment.
  • Lifting movement to separate small and thin objects.
  • Less suitable when the lifting force is parallel to the surface of the object.
Metric   Imperial
Curve radius 0.16 in
Movement, vertical max. 0.51 in
Application Bag handling, Food contact materials (FDA & EU), non-detectable
Material Silicone (SIL FDA)
Suction cup model BL-2
Suction cup shape Multibellows
Volume 0.24 in³
Weight 0.11 oz
Fitting size 1/8"
Fitting style Male
Fitting type G-thread
Fitting option Filter mesh
Height 1.37 in
Outer diameter 0.79 in
Performance — lifting forces,
Vertical lifting force Parallel lifting force
6 -inHg 0.07 lbf 0.47 lbf
18 -inHg 0.14 lbf 0.92 lbf
Performance — lifting forces, reinforcement ring
Vertical lifting force
6 -inHg 0.72 lbf
18 -inHg 1.39 lbf
Silicone (SIL FDA)
Color Transparent
Hardness 50 °Shore A
Temperature -40 – 392 °F
Material resistance
Silicone (SIL FDA)
Alcohol ++
Concentrated acids -
Ethanol N/A
Hydrolysis +
Methanol N/A
Oil -
Oxidation +++
Gasoline -
Wear resistance ++
Weather and ozone +++

Dimensional drawings

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Spare parts
Part no.
Fitting G1/8" male, with mesh filter 02AB
Suction cup BL20-2 Silicone FCM BL20-2.21

Part no.
Fitting 1/8" NPT male, with mesh filter 02AC
Fitting G1/8" male/M5 female, with mesh filter 02AF
Support / CAD
Training (4)
    • Suction cups

      • How do I know which lifting forces I need?
        • It depends on the weight of the product that should be lifted and how many suction cups that can be used for the object. Calculate the weight to be lifted per suction cup and then take the weight multiplied with the gravity force (g=9.81) and you have the lifting force needed in pound force (lbf).

      • How do I know which suction cup to choose?
        • Our recommendation is to start at the application listing to find the products we recommend to different applications. If you have questions please do not hesitate to contact our partners to find the optimum solution.

      • How should Piab suction cups be stored?
      • I have a variation of number of objects to be lifted- how can I make sure to not drop them or to use too much energy? How to optimize this type of system?
        • All suction cups not in contact with an object (open) will draw in a lot of air and demand a larger pump than actually necessary. By using different valves, such as piSAVE sense, in the suction cups, the suction cups will be normally closed until they come in contact with the handled object. Only the cups needed in the specific lifting cycle will be open and flow air. Please see the video piSAVE sense

      • What is DURAFLEX®?
        • DURAFLEX® is a patented material specially developed to feature the elasticity of rubber and the wear resistance of polyurethane. The DURAFLEX® material is mark-free.

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