Rotron brushless dc sealless water circulation pumps can deliver up to 60,000 h of service life onboard heavy-duty transit buses, construction vehicles, and off-highway equipment. Offering leak-proof protection, the sealless design also features the capability to resist harsh environmental conditions such as hot-water spray, salt, fog, shock, and vibration. The pump magnetically couples to the brushless dc motor without a wet seal to wear or replace. This coupling method also enables easy motor removal without the need for system draining, according to the company. The pumps’ electronically commutated brushless dc motor is designed to provide maintenance-free operation over time by eliminating brush maintenance and associated brush motor failure.