Moisture Curing, One-Component
Direct Glazing Sealant for Repair Glazing of Vehicles
Vehicle without Airbag can be Driven after 2 Hours
with Airbag after 6 Hours
Solvents and PVC free
Product Description
Terostat-8596 is a one component, moisture curing Direct Glazing Sealant with excellent sag resistance
based on polyurethane, which cures by reaction with moisture to a soft elastic product. The skin formation
and curing times are dependent on humidity and temperature, and the curing time also depends on joint
depth. By increasing the temperature and moisture these times can be reduced; low temperature as well as
low moisture retard the process.
The Direct Glazing Sealant demonstrates the following characteristics:
– excellent adhesion with Primer Terostat-8517 H on glass, ceramic coated glass and on painted surfaces
– excellent adhesion on material residues
– high cure rate
– high UV resistance in connection with Primer Terostat-8517 H
– high shear strength, retained on ageing.
Application Areas
Bonding of front, rear and side screens to the body of passenger cars, trucks, busses, forklift and tractor
cabins as well as special vehicles. Single or double pane side window glazing in the bus and railway coach
industry.
Technical Data
1. Terostat-8596
Colour: black
Odour: weak
Consistency: smooth, sag-resistant paste
Density: approx. 1.2 g/cm3
Solids: 100 %
Curing mechanism: moisture curing
Cure rate: approx. 5 mm/24 h
(DIN 50014 standard climate: 23°C, 50 % rh)
Shore-A-hardness (DIN 53505): approx. 55
Tensile strength (DIN 53504): approx. 8.5 MPa
Stress (DIN 53504): approx. 2.5 MPa at 100 % elongation
Shear modulus (DIN 54451): approx. 1.2 MPa
Elongation to break (DIN 53504): approx. 300 %
Shear strength: approx. 2 MPa (after 24 h DIN 50014)
(thickness 5mm, 5–6 MPa (fully cured)
based on DIN EN 1465)
Volume change (DIN 52451): < 1 %
Glazing time: maximum 25 mins *
Application temperature: 5°C to 35°C
In service temperature range: -40°C to 90°C
Short exposure (up to 1 hr.): 120°C
Terostat-8596 / Edition 3 Issue: 2004-03-26 Page 2 of 3
* period of time between beginning of material application until inserting of the pane
2. Terostat-Primer-8517 H
Colour: black
Density: approx. 0.98 g/cm3
Solids: approx. 36 %
Optimum layer thickness: 50 μm wet
Drying time: approx. 15 mins
Primer open time: up to 24 h after application
Preliminary remark
Prior to application it is necessary to read the Safety Data Sheet for information about precautionary measures
and safety recommendations. Also, for chemical products exempt from compulsory labelling, the
relevant precautions should always be observed.
1. Cleaning
The surfaces to be bonded must be dry, free of oil, dust, grease and other contaminants. Glass or ceramic
coatings as well as the painted surface are cleaned with Cleaner-FL. The residual cut layer (see below)
should not be cleaned. If cleaning of this layer cannot be avoided, a drying time of a minimum of 30 minutes
prior to sealant application has to be observed, because the adherents have to be absolutely dry.
2. Priming
Surface priming is carried out by a thin (ca. 0.05 mm wet) and even coating of Primer-8517 H on the cleaned
glass, ceramics or paint surface, using the applicator provided with the Repair Set. The primed area must be
allowed to air dry for ca. 15 minutes before applying the Direct Glazing Sealant.
Do not use a primer when the material is applied onto a bead of cut and cured adhesive/sealant left on the
body flange. The cut surface – if not contaminated by dust or grease – provides an ideal substrate for application
of fresh Terostat-8596.
3. Activation of pre-coated screens
Screens which have been pre-coated by the glass manufacturer with a PUR based adhesive/sealant must
be treated with Activator Terostat-8525 to ensure trouble-free adhesion of Terostat-8596 on to the precoated
layer.
Terostat-8525 is applied with a wool applicator in a thin layer and allowed to air dry for ca. 15 minutes. Terostat-
8596 can then be applied in the normal manner but care must be exercised to take into account the
2 mm thickness of the pre-coating.
Screens pre-coated with PUR based adhesive/sealant are used for instance on many types of VW/Audi
vehicles.
4. Application
Terostat-8596 can be directly applied from cartridges employing standard air or hand operated guns. Teroson
recommends the use of
– Teroson Telescopic Pistol Power Line Art-Nr. 141.84 S
IDH 211757
– Teroson Staku manual hand gun Art-Nr. 167.65 Y
IDH 142240
The instructions included in the Teroson Glazing Repair Set contain a detailed description of the repair operation.
Test Certificate
Terostat-8596 is tested by the German TÜV. The respective test certificate of the TÜV-Rheinland is
available:
Drive–away time
after window installation (according to the US–Norm FMVSS 208/212)
with Airbags: 6 hours
without Airbag: 2 hours
Storage
Frost-sensitive no
Recommended storage temp. 10°C to 25°C
Shelf-life 18 months in original packaging
Packaging
Cartridge 310 ml Art.-No. 164.75 H
IDH 450 533
Direct Glazing Repair Set Set Art.-No. 168.83 B
IDH 450 532
Applicator Set 25 pieces Art.-No. 140.64 M.
