RTV Silicone Mold Making Rubber

FOB Price

US $9.23
200 - 40,000 kilogram
US $4.98
40,001 - 999,999 kilogram

group nameRTV-2 silicone rubber for molds making
Min Order200 kilogram
brand nameHong Ye silicone rubber
modelRTV630
payment methodT/T, L/C, Westem Union
update timeFri, 08 Nov 2013 16:12:05 GMT

contact supplier

Paramtents

Available color white
Operation way pouring way
Hardness 30 shore A
Mixing proportion of curing agent 100:5
Curing time 4-5h
Pot life 20-30min
Viscosity (MPas -25 0C) 20000
Tensile-strength(kgf /cm2 ) 80
Certifications RoHS.MSDS.SGS ISO9001:2000

Packging & Delivery

Min Order200 kilogram

Briefing

RTV Silicone Mold Making Rubber
High strength
Low viscosity
4% free catalyst
SGS,Rosh, MSDS

Detailed

Description of RTV Silicone Mold Making Rubber

RTV Silicone Mold Making Rubber is a type of silicone rubbermade from a two-component system (base plus curative; A+B) available in a hardness range of very soft to medium - usually from 15 Shore A to 40 Shore. RTV Silicones can be cured with either a platinum catalyst or a tin catalyst. Applications include low temperature overmolding, making molds for reproducing, and some optically clear grades have lens applications.

Features of RTV Silicone Mold Making Rubber

a.low viscosity

b.easy operation

c.long shelf life over 12 months

d.good tear strength and low shrinkage

e.curing at room temperature within 2-4hours

f.high duplication times and no deformation

RTV Silicone Mold Making Rubber

Technical datasheets of RTV Silicone Mold Making Rubber

Model	Our625# A/B	Smooth-on Mold Max ® 25T	E625#	Mold Max® Silicones 25	E620#
Mixing proportion of catalyst(%)	100:5	100:5	1:1	10:1	Translucent
Hardness (A°)	23~25	25	25 ± 2	25	1:1
Density ( g/cm 3 )	1.12	1.18	1.08	1.18	20-30
Viscosity (25 C°,mPa.s)	17 000—19 000	25,000	6000 ± 2000	25000	2-3h
Tensile strength (Mpa)	40±5	40	50±5	40	20±2
Tear-strength (KN/m )	25±2	23	25±2	14.5	1.08
Elongation-break(%)	≥ 400	375	380 ± 50	375	6000 ± 2000
Working time (minutes)	30~60	45	20~30	60	25 ± 2
Curing Time (hours)	12~24	24	2~3	24	20
Liner shrinkage (%)	≤0.3	0.2	≤0.1	0.1	380 ± 50
					≤0.1

Attention for RTV Silicone Mold Making Rubber

If the mold makers want to make large products and large size molds, the mold should be made of silicone rubber with high hardness. On the contrary, if the products with fine and precision patterns, it should be made of silicon with low hardness.
The amount of the curing agent depends on the actual requirements of the customer. If molds requiring fast drying and demould, more curing agent is needed; Contrarily, if molds requiring slower drying and demould, less curing agent is needed.
it doesn't better to add silicone oil into silicone rubber. If a special soft silicon mold or fine detailed and complex patterns products are required, 5%-10% silicone oil can be added to soften the mold for easy demould. )

Shelf life and package

The shelf life can be reach to 12 months at room temperature about 25c in orignal package.

Our normally package is 25kg/pail and 200kg/pail.

RTV Silicone Mold Making Rubber