1.19years experience,high quality, competitive price. 2.type:Single&Double flared ... , long life . 4. Double o-ring seal, contributing greater security. 5. Antielectrolysis ring of maximum effectiveness. 6. Design of ... sleeve Size DIA 12,14,16,18,20,25,32,40,50,63,75MM8. Used for fastening, joining, ... water, sanitary hot water, and heating ect. High quality stainless steel sleeve pipe fittings