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  1. 318250
    18 mm 50/10 Silicone/PTFE Septum (100/pk) Item # 318250
    18 mm 50/10 Silicone/PTFE Septum (100pk) Learn More
  2. /318204-Red-PTFE-and-White-Silicone-Seal-for-18mm-Screw-Caps.JPG
    Red PTFE/White Silicone Seal for 18mm Screw Cap (100/pk) Item # 318204
    Red PTFE/White Silicone Seal for 18mm Screw Cap (100/pk) Learn More
  3. /318205-White-Silicone-and-Blue-PTFE-Septa-for-18mm-Screw-Caps.JPG
    White Silicone/Blue PTFE Septa for 18 mm Screw Top (100pk) Item # 318205
    White Silicone/Blue PTFE Septa for 18 mm Screw Top (100pk) Learn More
  4. 18 mm Pure PTFE Seal (100/pk)
    18 mm Pure PTFE Seal (100/pk) Item # 318005
    18 mm Pure PTFE Seal (100/pk) Learn More
  5. 318201
    18 mm 90/10 Silicone/PTFE Septum (24pk) Item # 318201
    18 mm 90/10 Silicone/PTFE Septum (24pk) Learn More
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