1)According to your drawing. 2)Good quality and competitive price 3)Excellent technique and service 1, Materia:NBR,CR,SBR, EPDM,HNBR,ACM, IIR,NR,EP,Silicone,Viton etc.2, Hardness :Between 30~90 shore A3, Property:high/low temperature ( -40°C to +300°C ) resistance,oil and fuel resistance,weathering resistance,Ozone resistance etc 4, Certification: ISO9001:2008,ROHS,FDA5, Packing:plastic bag& ...