To reinforce its market position and expand the technological advantage, the preeflow products are continually improved and optimized. In this case, the miniature O-ring on the end piece (see picture) was perfected the patent protected luer lock.

The new red-colored O-ring provides the following advantages:
- improved visualization of the O-ring
- improved media resistance of the O-ring
- improved mechanical sealing

Source: ViscoTec Pumpen- u. Dosiertechnik GmbH