1.LSB specially produce the o-ring,x-ring.rubber parts 2. Material: FFKM,NBR, HNBR,EPDM ... air conditioning, etc.3. Main products: O-Ring.X-Ring V-Ring.R-Ring. Y-Ring.U-Ring., Oil Seal,PU oil seals , rubber ... ,KTW,W270, ROHS, SGS .5. Packing: neutral or as per client's requirement.6. Colour: red ,white,black ,blue , ... can be make on your requirement ,but o-ring's mold fee is free. industrial rubber oil ...