Rosen manufacture various size of ceramic sleeve.Our ceramic sleeves are made of zirconia or silicon nitride ceramic material.They are widely used on nut stud welding.We supply various size ceramic sleeves.Include M4,M5,M6,M8,M10,M12,M14 ceramic sleeve.Also accept customized sleeve according to your drawing.
Silicon Nitride Ceramic Sleeve:
Silicon Nitride Ceramic Sleeve 
Silicon Nitride Ceramic Bushes 
Ceramic Bush in Si3N4
White Zirconia Ceramic Sleeve:
Special Size Ceramic Solid Sleeve 
2.5mm Ceramic Solid Sleeve 
1.25mm Ceramic Solid Sleeve