Analytical Lab Products & Chemicals

20mm Magnetic Crimp Cap, Red Bi-Metal, .120" (3mm), PTFE/Butyl Rubber, Pharmafix, 100-pk

Part Number:
4570-438
☎ Check Stock & Pricing: Call or email us to check current stock, request bulk pricing, or get a formal quote.
(855) 390-4202 | sales@ibisscientific.com
$115.63

Product Description

20mm Magnetic Crimp Cap, Red Bi-Metal, PTFE/Butyl Rubber Septa, Pharmafix – 100-pk

This 20mm magnetic crimp cap features a red bi-metal construction designed for reliable sealing of headspace vials in GC and GC-MS applications. The Pharmafix design incorporates a PTFE/butyl rubber septum with a thickness of .120" (3mm), providing excellent chemical resistance and low gas permeability—ideal for volatile compound analysis, pharmaceutical quality control, and environmental testing laboratories requiring consistent sample integrity.

  • Cap Size: 20mm magnetic crimp cap compatible with standard headspace vials
  • Septum Material: PTFE-faced butyl rubber for superior chemical inertness and resealing capability
  • Septum Thickness: .120" (3mm) for reliable puncture resistance and multiple injections
  • Cap Construction: Red bi-metal design for easy visual identification and secure crimping
  • Pharmafix Design: Ensures proper septum positioning and consistent sealing performance
  • Package Quantity: 100 caps per pack | P/N: 4570-438

Specifications

Product Type Cap
Closure 20 mm Crimp
Material PTFE/Butyl Rubber
Color Red
Product Style Magnetic
Pack Size 100-pk