https://www.reksonpolymer.com/Silicon-Triclover-Diaphragms.php

Medical-grade, platinum-cured Silicone is widely accepted in pharmaceutical and biotech applications and is often used throughout the plant. Like all of our diaphragm materials, our Silicon Triclover Diaphragms meet USP Class VI and FDA 21 CFR 177.2600 standards. Rekson rubber products are appreciated for their exclusive designs.

Rekson Rubber & Polymer Technologies