SV666 Neutral Silicone sealant for Window and Door

Short Description:

SV-666 neutral silicone sealant is a one-part,non-slump, moisture-curing that cures to form a tough, low modulus rubber with long-term flexibility and durability. It is specially designed for windows and doors caulking sealing general plastic doors and windows. It has good adhesion to glass and aluminum alloy, and has no corrosion.

MOQ: 1000 pieces

Product Detail

Product Tags

Product Description



1. 100% silicone

2. Low Odor

3. Waterproofing and weatherproofing

4. Primerless adhesion to most building materials

5. 12.5% movement capability

6. 25 year guarantee* against cracking, crumbling or peeling away

MOQ: 1000 pieces



SV666 is available in black, gray, white and other customized colours.


It is fit for multiple purpose sealing and bonding applications to form a silicone rubber adhering to adjacent substrates e.g. glass, ceramic, tile, wood and metal.

silicone sealant


These values are not intended for use in preparing specifications

Test standard Test project Unit value
Before curing——25℃,50%R.H
GB13477 Flow, sagging or vertical flow mm 0
GB13477 surface drying time(25℃,50%R.H.) min 30
GB13477 Operating time min 20
Curing time(25℃,50%R.H.) Day 7-14
Sealant curing speed and operating time will have different with different temperatures and temperature, high temperature and high humidity can make sealant curing speed faster, rather low temperature and low humidity are slower.21 days after curing——25℃,50%R.H.
GB13477 Durometer Hardness Shore A 28
GB13477 The ultimate tensile strength Mpa 0.7
Temperature stability -50~+150
GB13477 Movement capability % 12.5

Product Information

silicone sealant neutral


300ml in cartridge * 24 per box, 590ml in sausage *20 per box


As exposed to air, SV666 begins to cure inward from surface. Its tack free time is about 50 minutes; the full and optimal adhesion depends on the sealant depth.


SV666 is designed to meet or even exceed the requirements of:

Chinese national specification GB/T 14683-2003 20HM


SV666 should be stored at or below 27℃ in original unopened containers. It has a shelf life of 12 months from the date of manufacture.


Surface Preparation

Clean all joints removing all foreign matter and contaminants such as oil, grease, dust, water, frost, old sealants, surface dirt, or glazing compounds and protective coatings.

Application Method

Mask areas adjacent to joints to ensure neat sealant lines. Apply SV628 in a continuous operation using dispensing guns. Before a skin forms, tool the sealant with light pressure to spread the sealant against the joint surfaces. Remove masking tape as soon as the bead is tooled.


Complete technical information and literature, adhesion testing, and compatibility testing are available from Siway.


The information presented herein is offered in good faith and is believed to be accurate. However, because conditions and methods of using our products are beyond our control, this information should not be used in substitution for customer’s tests to ensure that our products are safe, effective, and fully satisfactory for specific applications.

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