... ODM available ISO9001,SGS,ROHS Lead time:30 Day engine seal1)Applicable material:Silicone,NR,NBR,SBR,EPDM,CR ... & 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 have ... your enigine for race tolerances and performance. engine seal ring 5mm rubber gasket