防尘盖 meaning in English

dust cap
dust cover
dust guard
dust-cover
shield (bearing)

Pedal screwed dust cap
脚踏防尘盖
Stainless steel test cocks include dust covers to protect the threads from dirt , dust and insects
不锈钢测试旋塞包括防尘盖，防止螺纹被泥土、灰尘和昆虫污染。
Tripe - lips type : the metal shield with long triple rubber lips has considerable large torque and good sealing
三唇密封形式，金属防尘盖上带有三重细长密封胶唇的严格密封，具有较大的按触密封扭矩。