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  1. 18-400-Solid-Green-Screw-Cap-with-PTFE-Liner
    18-400 Solid Screw Cap w/ PTFE Liner (100/pk) Item # 520310
    18-400 Solid Screw Cap w/ PTFE Liner (100pk) Learn More
  2. 18mm-Pre-Assembled-Silver-Screw-Cap-with-Red-Butyl-and-Gray-PTFE-Septa
    18 mm Pre-Assm Silver Screw Cap w/Butyl Red/PTFE Gray Septa(100/pk) Item # 320128
    18mm Pre-Assm Silver Screw Cap W/Butyl Red/PTFE Gray Septa (100/p Learn More
  3. 18mm-Pre-Assembled-Silver-Screw-Cap-with-White-Silicone-and-Blue-PTFE-Septa
    18 mm Pre-Assm Silver Screw Cap w/Sil White/PTFE Blue Septa(100/pk) Item # 320126
    18mm Pre-Assm Silver Screw Cap W/Sil White/PTFE Blue Septa (100/p Learn More
  4. 18mm-Magnetic-Screw-Cap-with-1.3mm-White-PFTE-Ice-Blue-Silicone-Rubber-Septa
    18 mm Magnetic Screw Cap w/ 1.3 mm white PTFE/Ice blue sil. rubber septa(100/pk) Item # 320125
    18 mm Pre-Assm Silver Screw Cap w/Sil Blue/PTFE White Seal(100pk) Learn More
  5. 18mm-Pre-Assembled-Silver-Screw-Cap-with-White-Silicone-and-Red-PTFE-Septa
    18 mm Pre-Assm Silver Screw Cap w/Sil White/PTFE Red Septa(100/pk) Item # 320124
    18mm Pre-Assm Silver Screw Cap W/Sil White/PTFE Red Septa (100/pk Learn More
  6. 18 mm Pre-Assm Mag. Silver Screw Cap w/Chlorobutyl Septa (100/pk)
    18 mm Pre-Assm Mag. Silver Screw Cap w/Chlorobutyl Septa (100/pk) Item # 320129
    18 mm Pre-Assm Mag. Silver Screw Cap w/Chlorobutyl Seal (100pk) Learn More
  7. PolyMag Caps
    18 mm PolyMagnetic Screw Cap w/ White Silicone/blue PTFE, 0.060" (100/pk) Item # 318212
    • 18mm magnetic screw cap • Easy-to-use polypropylene screw thread format Learn More
  8. PolyMag Caps
    18 mm PolyMagnetic Screw Cap w/ Trans blue sil/White PTFE, 0.070" (100/pk) Item # 318211
    • 18mm magnetic screw cap • Easy-to-use polypropylene screw thread format Learn More
  9. PolyMag Caps
    18 mm PolyMagnetic Screw Cap w/ Red Butyl/Natural PTFE, 0.125" (100/pk) Item # 318210
    • 18mm magnetic screw cap • Easy-to-use polypropylene screw thread format Learn More
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