... available ISO9001,SGS,ROHS Lead time:30 Day engine seal1)Applicable material:Silicone,NR,NBR,SBR,EPDM, ... R&D engineers,skillful workers and high QC system assure our products to meet international approvals.10). ... Springs Did You know we can dynamically balance your engine pieces, or 3 mm your rotors, or CNC ... Dowel pin your engine to closer tolerances than most machine shop? We ...