Wheaton® Solid Black Phenolic Screw Caps with PTFE-Faced 14B Rubber Liner
Wheaton® solid black phenolic screw caps create a positive seal that protects against product escaping and prevents product contamination by outside substances. The white rubber liner consists of virign PTFE plastic bonded to the white sulfur cured styrene-butadiene rubber. Complies with the FDA 21CFR 177.1550. These screw caps are for use with Wheaton® sample vials or bottles. Fully autoclavable for sterile lab or field sampling and storage applications.