PP Screw Seals ND8

Polypropylene Screw Cap black, 8-425 thread.

• Ready to use combination seals; no time consumingand “tricky” assembly
• Available with black or white screw caps with 8-425 thread
• Available as closed top screw seals or with centre hole
• Now available either with Natural Rubber or RedRubber as cost-effective seals

Natural Rubber/TEF and RedRubber/PTFE Seals

• Natural rubber temperature resistant from - 40 °C to 120 °C
• RedRubber/PTFE from - 40 °C bis 160 °C
• Natural rubber is more difficult to penetrate than RedRubber and has a higher particle formation
• RedRubber and butyl show less fragmentation than natural rubber
• Natural rubber is ideal for multiple injections due to its good resealing properties, but not as clean as RedRubber or Butyl

Silicone/PTFE Seals

• Temperature resistant from - 60 °C to 200 °C
• Preferably for single injections only
• Different hardnessesto suit the respective needle types
• Cleaner than natural rubber, RedRubber or butyl
• Silicone septa coated on both sides for low particle formation during penetration

Natural Rubber/TEF, RedRubber/PTFE, Butyl/PTFE and Silicone/PTFE Seals, closed top