Nexo Polyurethene Autowindsheild Glass Sealant, Color : Black

description: nexo seal pu sealant is a one part, high viscosity, polyurethane based sealant which cures by the action of air moisture and changes the product from a pasty to an elastomeric mastic. it offers excellent adhesion on glass and metal. it is mostly suitable for auto glass/car windshield / bus body. features: ♦ high modulas & tensile strength ♦ excellent adhesion on glass and metal surface ♦ outstanding durability ♦ permanently flexible ♦ weatherproof ♦ good uv resistance uses: bus body ,crane ,sealing for automotive windscreen, windows and scuttles sealing in automotive, caravan, ship bulding and railway industry page | 2 limitations: avoidexposure to highlevel of chlorine. avoidcontactwithalcohol andother solvent cleaners during cure.do not cure in the presenceof curing silicone sealants. do not apply when a moisture vapour transmission condition exists at timeof application, as this can cause bubbling within the sealant. joint design: the specified sealant bead size should be calculated to comply with the compression and extension capabilities of the sealant in relation to the anticipated joint width due to expansion and contraction. sealant widthshould never be less thansealant depth. generally calculation of the width of pu sealant bead should be computed on the basis of wide movement accommodation of ± 25%. compression and extension capability minimum bead size should not less than 3mm to accommodate movement.design joint depth of which ratio width becomes 0.5to 1. joint depth maximun 15mm. application:  surface must be clean and dry. remove all dirt, oil, grease, detergentsandloose material.  mask smooth surface to simplify clean up.  cut tip off cartridge. cut nozzle to desired size at 45° angle. insertcartridgeinto caulking gun.  insert cartridgeintocaulking gun.  push sealant aheadfor uniform bead.  tool within 15 minutes with joint nail or putty knife.  clean off excess sealant with m.e.k. or toluene before dry  do not apply the sealant below +5°c. warm up the cartridges or sausageat 20°c if application by coldweather specification: type thixotropicpaste color black odour light appearance non-sagging paste specific gravity 1.5 to 1.6 shore hardness 40-45 modulus at 100% e 0.8 skinning time 40 – 60 minutes cure rate 3mm per 24 hours (23°c & 50%r.h.) application temperature +5°c to +35°c storage temperature between (+5°c ~ +25°c) shelf life 12 months (+5°c~ +25°c) from date of packing. caution: uncured sealant may irritate eyes. in case of contact with eyes, flush withwater and obtain medical advice.useinwell ventilatedarea.