Rubber v-belt Plz refer to our quality certificate in our alibaba web. If you need, we could offer you SGS certificate. our goods passed ISO9001:2000 certificate. Plain v-belt: FM(9.5),Z,O,A,B,C,D,E,F,SPZ,SPA,SPB,SPC, 3V, 5V,8V,14X10, 21X14,etc Raw Edge V-Belt :AV-10, AV-13, AV-17 and AV-22,9.5X, AX, BX, CX, DX,VX - SPZX - SPAX - SPBX - SPCX - 5VX,etc. Hexangular Belt: HAA,HBB,HCC,AA,BB,CC Agriculture Machinery Variable-Speed Belt :(HI,HJ,HK,HL,HM) 17X7,....104X32 Group Wedge-Shaped Belt/Banded v-belt: AJ - BJ - CJ - DJ , 5V(15J) - 8V(25J) - R-SPZ - R-SPA - R-SPB - R-SPC - 3V(9J) Automotive Timing Belt: 3M, 5M, 8M, 14M, 20M, S2M, S3M, S4.5M, S5M, S8M, S14M, RP2M, RP3M, RP5M, RP8M, RP14M, etc. R(MR), Y(MY), ZBS, YU, RU, ZA, FS, ZD, ZR, ZAS, ZB, RHD, RHX, RPP, SL, etc. Rubber Ribbed Belt: PH,PJ,PK,PL,PMFeature of rubber v-belt Envelope: Aspecialrubber-impregnatedfabricthatoffersresistancetoabrasion. Itisalsoresponsibleforthetotalprotectionofallthebelt'scomponents. Tensileelement(tensilecords): Constitutedofsyntheticfibercords(polyester)thatguaranteetotalpower transmissionwithaverylowelongationrateandhighresistancetofatigue. Compressionelement: Acompoundpreparedtoresistthefatigueofcompressionandtodissipate heatgeneratedbythesystem;therebygivingthebeltalongerlifespan. Insulatingelement: Aspecialcompoundpreparedtokeepthetensileelementconnectedto thebodyofthebelt,thusavoidingfrictionbetweenthecomponents. Tensionrubber: Amaterialcomposedofspecialrubberthatisresponsibleforreducingthe possibleeffectsofimpactonthebelt.Italsooffersbetterflexibility tothesystem,andbetteradjustmentofthebelttothepulley. Wrapped V-belt (Unit:mm)