DWK Wheaton 20-400 Cap, Phen Blk, PTFE Lnr

DWK Wheaton Black Phenolic Screw Cap, PTFE-Faced Rubber Liner, 20-400, Case of 100. Rubber lined caps feature a nontoxic white styrene-butadiene rubber liner ideal for cell culture work. Aluminum foil faced pulp board liners can be used with organic solvents. Good resistance to hydrocarbons, oils, ketones and alcohols Not good for acids or alkalis. Use low density polyethylene (LDPE) lined caps with distilled water, analytical standards and reagents. PTFE faced (14B) styrene-butadiene rubber liner provides a totally inert inner seal and surface facing the sample or product. Bonded PTFE faced silicone liner ideal for storage of volatile solvents, sensitive compounds and corrosive chemicals. Poly-Seal liner (LDPE) has unique cone liner design and offers superior torque retention and excellent sealing characteristics - WTN