Ensure optimal oxygen levels in your aquarium with these 10 black rubber diaphragm air pump replacement parts. Compatible with most aquarium air pumps, these durable rubber diaphragms help circulate and oxygenate the water, promoting a healthy environment for your fish. Measuring approximately 2 inches in diameter, these versatile parts are easy to install and maintain. Keep a spare set on hand for seamless replacements when needed. Crafted from high-quality rubber, these diaphragms are designed for long-lasting performance. Elevate your aquarium setup with these essential air pump accessories.