Elastomer Container Closure Components (Rubber Stoppers, Tips)

American drug delivery and packaging company (NYSE: ATR, HQ Crystal Lake IL; ~$3.5B revenue); Aptar Pharma division produces drug delivery devices and components including injectable drug delivery systems, needle-free injection components, and parenteral packaging. For IV bag applications, Aptar supplies injection site components and additive port systems. Aptar also produces metered-dose inhaler (MDI) valves for asthma inhalers (a major product line), nasal spray pumps, and eye dropper closures. The same Aptar company that makes the pumping mechanism in your nasal allergy spray also supplies components for IV bag injection ports.

Swiss industrial components conglomerate (SIX: DAE, HQ Altdorf, Uri; ~CHF 1.5B revenue); Datwyler Pharma Solutions division produces pharmaceutical elastomeric closures (rubber stoppers, plungers) and plastic components for IV bags, syringes, and vials via its Helvoet Pharma and Datwyler operations. Datwyler operates cleanroom rubber vulcanization and plastic injection molding facilities in Belgium, France, Germany, US, and Asia. Uri canton in Switzerland — where Datwyler is headquartered — is the historic canton of William Tell, the legendary Swiss freedom fighter. The canton that produced the founding myth of Swiss independence now produces the rubber closures and plastic ports used in hospital IV bags worldwide.

ExxonMobil Chemical Company (Spring, Texas; NYSE: XOM; chemical segment ~$12B revenue) produces Vistalon EPDM at its Baton Rouge, Louisiana and Baytown, Texas complexes — two of the world's largest integrated petrochemical sites. Vistalon EPDM holds an estimated 12-15% global market share. ExxonMobil's ethylene and propylene feedstock integration at its Gulf Coast facilities provides a cost structure advantage for EPDM production. Vistalon is used in automotive seals, roofing membranes, wire insulation, and plumbing and water system gaskets. ExxonMobil also produces Butyl rubber (Butyl IIR) and other specialty elastomers from the same Gulf Coast facilities — the same sites producing vehicle fuel also produce the rubber seals used in plumbing systems.

Specialty chemicals major; significant Western producer of phosphorus trichloride (PCl3) and other phosphorus-based chemicals.

American pharmaceutical packaging components company (NYSE: WST, HQ Exton PA; ~$3B revenue); world's leading manufacturer of drug packaging components including rubber stoppers, seals, and plastic closure systems for vials, syringes, IV bags, and drug cartridges. West Pharma's Daikyo Crystal Zenith® plastic components and SmartDose® electronic drug delivery systems are used by virtually every major pharmaceutical company. For IV bags, West supplies elastomeric injection ports, administration set connectors, and additive port caps. West Pharmaceutical Services benefited enormously from the COVID-19 vaccine rollout — its rubber stoppers seal vaccine vials; the company's stock rose ~4x from 2019 to 2022 as vaccine production surged. West also operates a joint venture with Daikyo Seiko (Japan) — producer of Crystal Zenith cyclic olefin polymer (COP) syringes and vials used for sensitive biologics. The same Pennsylvania company that makes the little rubber stopper in your flu shot vial also makes the port components on IV bags and the closure systems for insulin cartridges.