water-proof uv quartz sleeve for uv lamp good material quartz ... one end closed or both ends open meet ROHS FDA water-proof uv quartz sleeve for uv lampWe are a very professional ... 15mm, 17mm, 19mm5)Wavelenght of uv lamp: 253.7nm, 185nm6)Cap type of uv lamp: G23, 2G7, GX23, 2G11, G32qPBT plastic ... cap or G5, G13, G10q ceramic cap7)Lifetime of uv lamp: ...