... rubber seal, etc. Description of ACM/ FLS/ MVQ Electrical Cable Seal:1. Materials: ACM, also can be NR, HNBR ... , Buna, FVMQ, MVQ, ACM, FLS, CR, SBR, SI, ... BR, IR, EPDM, IIR, butyl, PU, E/A, ECO, CSM, VITON, ... request, tolerance is ± 5 shore A, and can be ±3 shore A for special products.4. Size tolerance: ...