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, silicone diaphragms meet USP Class VI and FDA 21 CFR 177.2600 standards. It is suitable for Biomedical / Pharma application. All diaphragms meet the standards for quality, purity, lack of toxicity, strength & consistency.