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Product Name: Platinum Cure Silicone Rubber for Tyre Mouldmaking

Product Model: XB-620#, XB-625#,  XB-630#,

Product Description:
The platinum cure silicone for tyre moudmaking is great to make tire molds either with simple or intricate patterns, either for the snow tyre or common ones.
With the excellent tension and tear strength, flexibly, especially almost nil shrinkage, Sibetter Platinum cure silicone rubber has won an good reputation in the market of tyre molding.
Generally, both the platinum cure and condensation cure silicone of 10shore A to 30shoreA would be used to make tyre mould, but come customers won’t make the outer mold when platinum cure silicone is used, then if you choose this kind, the item with a little hight hardness, saying 25~30 shore A would be recommend.

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* Amazing fluidity and easy to operate

* Platinum-based, food-grade silicone (environmental friendly, odorless and non-toxic)

* Delicate design available

* Mixing ration 1:1, easy to mix

* Easy de-molding, won’t damage the original CNC modeling

* Excellent tension and tear strength

* Shrinkage is almost zero (below 0.1)

* Excellent resistance to weather, temperature, aging, acid and aging-proofing.

* High resistance to high temperature and aging(resist -60℃ to 250℃)


Besides the tyre mouldmaking, the XB-620#/625#/630# also can be used to make molds for other products, especially the food-related molds since they are platinum cure silicone rubber in food grade.

  1. concrete/cement/artificial stone products,
  2. plaster line/conics, concrete stamping, garden statues, plaster window decoration, GRC/GRFC products,
  3. furniture, roman column mold making, etc.
  4. food related products mould, such as chocolate, candy, cake, butter, fondant, butter, ice statues, cookies, etc.

As they are platinum cure silicone, which will be easy to cause uncure problem, so kindly follow the tips below

* Do not mix with liuqid condensation silicone rubber or even the tool which used for condensation silicone

* Do not mix with organic matter which contains N, S, P organics and ionic compound like Sn, As, Hg, Ph

* Do not add any pigment or powder into the addition cure silicone rubber without any testing to prevent uncure problem

Technical Parameters
Model NO· XB-620 XB-625 XB-630
Mixing Ratio (by weight) 1:1 1:1 1:1
Appearance/Color Translucent Translucent Translucent
Hardness (Shore A) 20±2 25±2 30±2
Mixed viscosity(mPa·s) 2000±500 2000±500 4000±500
Working Time(at 23℃/75℉, MINS) 30~40 30~40 30~40
Curing Time(at 23℃/75℉, HRS) 3~5 3~5 3~5
Tensile strength, Mpa ≥5.1 ≥5.5 ≥5.5
Tear strength, KN/m ≥21.5 ≥22.0 ≥14.8
Shrinkage, % <0.1 <0.1 <0.1
Elongation at break,% ≥700 ≥400 ≥400
Additional Information

More detailed information about purchase the liquid sillicone rubber from Sibetter Silicone Factory:


1) Small size packages

10kg/set——5kg/jar for each part

20kg/set——10kg/jar for each part

2.General size packages

40kg/set——20kg/pail for each part

50kg/set——25kg/pail for each part

400kg/set——200kg/pail for each part

Price Terms: EXW, FOB, CNF, CIF, DDU

Payment: L/C, T/T, Wester Union, Paypal, Cash

Delivery Details: within 5days after receiving the bank slip

Transportation: Sample by express via air, goods by logistics via air or sea

Sea Port: Guangzhou, Shenzhen, Hongkong

Supply Ability: 3 tons/day

Shelf Life: Twelve(12) months when stored under dry&cool place by original package under 23℃, 75℉.

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