High vacuum PTFE stopcocks

These straight pattern Rotaflo® High Performance PTFE stopcocks are individually tested for 10-9 Torr vacuum performance.

  • Rotaflo® High Performance vacuum stopcocks providing many significant benefits to the user:
  • Borosilicate glass with PTFE key for excellent chemical resistance
  • No lubrication required - no seizure and no contamination
  • Temperature range from -20°C to 200°C
  • Operates over a pressure range of +1bar to 10-9 Torr
  • Individually tested by mass spectrometer and supplied with certificate for guaranteed performance
  • Locking ring to prevent accidental removal of the key
  • Fully interchangeable keys
  • Ergonomic key for good grip and easy operation

Product Specification

Grouped product items
Item Code Approx overall length mm Key bore mm Sidearm OD mm Sidearm bore mm Pack quantity
HP3ST/5 210 3.0 8 5 1
HP3ST/7 210 3.0 10 7 1
HP6ST/7 210 6.0 10 7 1
HP6ST/10 210 6.0 13 10 1
HP10ST/10 225 10.0 13 10 1

Need help making a decision or looking to buy this product?

Simply get in touch or visit our global network of laboratory distribution partners.

Contact Us Where To Buy

For associated information, certificate or technical support, please visit our support area.

Get Support
pyrex flasks