JOHOR, MALAYSIA — Malaysian condom manufacturer Karex could raise prices by 20% to 30% in the coming months if disruptions from the Iran war continue, the company said. The producer is contending with a shortage of synthetic rubber, doubled input costs for some materials, and shipping delays affecting deliveries to customers worldwide.

"The situation is definitely very fragile. Prices are expensive," Chief Executive Officer Goh Miah Kiat said. "We have no choice but to transfer the cost to customers."

The Iran war has led to a virtual stoppage in ships traversing the Strait of Hormuz, constraining the flow of global energy supplies. The constraint has affected petroleum-derived products, including plastics and rubber. According to the U.S. Department of Energy, petrochemicals from oil and natural gas are used in more than 6,000 consumer products, including lipstick, tennis rackets and pajamas.

Shipments from Karex to Europe and the United States, which normally take one month to arrive, now take close to two months because of the shipping disruptions. Rising freight costs and the delays have left the company's customers with leaner stockpiles than usual, though Karex has been able to fulfill its supply needs so far. Demand for condoms has risen about 30% this year.

Karex was founded in 1988 in Johor, Malaysia, and bills itself as the world's largest condom maker. The company produces 5 billion condoms annually and exports to over 130 countries, supplying brands including Trojan and Durex.