1).Used for disposable syringe 2).With slick and intact appearance 3).Highly sealing ... 3ml, 0.5ml, 1ml, 2ml, 3ml, 5ml, 10ml, 20ml, 30ml, 50ml, 60ml, 100ml ColorBlackMaterialnature rubber, synthetic rubber(polyisoprene, rubber butyl ... rubber), silicone rubberFunctionit is a part of disposable syringe, highly sealing and sliding performance, prevent liquid overflow from syringeQualitythrough ...