PP, DIN thread GL 45. For secure storage and transport / shipping of valuable media. The integral plastic ring tears when the cap is first opened and is retained on the bottle neck. Therefore it can be clearly seen whether the bottle retains its original seal. After first untwisting, can be used as 'normal' screw cap.
- Max. temperature + 140 °C.
- Available with lip seal or PTFE coated silicone seal.