WHEATON White Polypropylene Screw Cap, Bonded PTFE Silicone Liner, 22-400, Case of 500

Use these caps with WHEATON or other manufacturers’ glass bottles or vials.

White polypropylene screw cap provides clear surface for writing on cap

Polyvinyl liners provide an excellent moisture barrier, can be used with mild acids, alkalis, solvents and alcohols

Foamed polyethylene (PE) liner Foamed polyethylene liner provides chemical resistance for acids, alkalis, solvents, alcohols, oils, household cosmetics and aqueous products. Excellent for environmental samples, pharmaceuticals and diagnostic reagents.

PTFE faced foamed PE liner offers excellent chemical resistance, ideal for use with high purity chemicals, strong acids and solvents

PTFE faced silicone liner consist of 0.055" (1.4 mm) of silicone and 0.005" (0.14 mm) of PTFE . Ideal for storage and retrieval of volatile solvents, sensitive compounds and corrosive chemicals.