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Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
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Festo
189379
Vacuum suction cup ESS-20-BU
The Festo 189379 is a round, 1.5-fold protective bellows industrial component featuring a 20 mm suction cup diameter, a 3 mm nominal width, and 6 mm of height compensation. Engineered for a nominal operating pressure of -70 kPa, it delivers a holding force of 12.9 N and a lateral force of 9.5 N with an operating pressure range between -95 kPa and 0 kPa. Weighing 6.7 g, this unit utilizes an upward connection position for mounting via vacuum connection in any position across an ambient temperature range of -20 °C to 60 °C. Submit the exact part number, quantity, and application requirements to request a quote.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
Request a QuoteWhy no listed price?
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 189379
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 189379.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Suction cup height compensation
- 6 mm
- Min. workpiece radius
- 40 mm
- Nominal width
- 3 mm
- Suction cup diameter
- 20 mm
- Suction cup volume
- 1.6 cm³
- Connection position
- up
- Mounting position
- Any
- Classication of suction cup holder
- Size 4
- Suction cup shape
- round protective bellows 1.5-fold
- Operating pressure
- -95 kPa...0 kPa | -0.95 bar...0 bar | -13.775 psi...0 psi
- Nominal operating pressure
- -70 kPa | -0.7 bar | -10.15 psi
- Operating medium
- Atmospheric air based on ISO 8573-1:2010 [7:-:-]
- Corrosion resistance class (CRC)
- 1 - Low corrosion stress
- LABS (PWIS) conformity
- VDMA24364 Zone III
- For use in the food industry
- See supplementary material information
- Ambient temperature
- -20 °C...60 °C
- Holding force at nominal operating pressure
- 12.9 N
- Lateral force at nominal operating pressure
- 9.5 N
- Product weight
- 6.7 g
- Type of mounting
- Via vacuum connection
- Vacuum connection
- M6
- Color
- Blue
- Shore hardness
- 60 +/-5
- Material of screwed plug
- Brass, nickel-plated | Steel, galvanized and chrome-plated
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 189379. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.