The HDT4006 heavy duty truck transmission rubber seals provide superior sealing performance for demanding applications. Manufactured from high-grade chloroprene rubber (CR), these black seals feature 65±5HRC hardness for exceptional durability. Engineered to withstand extreme temperatures from -40°C to 100°C, they offer excellent resistance to oil, weather, and environmental factors. These OEM-compliant seals are ideal for transmission systems requiring reliable, long-lasting protection.