... , EPDM 2) Model:TC,TB,TA,SC,SB,MG,etc valve stem seal features: 1) Materials: NBR, NR, FPM, MVQ, EPDM ... be ±3°)Mold processingCNC machines & EDM machinesMode of productionCompression or injection or extrusionProduction capability200tons,300tons, 500tonsQC20 persons team make sure every ...