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Truco 4101 Polyurethane Seam Sealer

Truco 4101 Polyurethane Seam Sealer is a technologically advanced, high solids, single component moisture cure polyurethane elastomeric sealant. In addition, 4101 is a brush grade sealant and an excellent all-purpose sealer to address roof leaks on most roofing substrates. 4101 is produced in an aluminum gray color that allows for faster cure times than white sealants. Mil for mil, 4101 provides greater protection against leaks and water penetration than most sealants due to its tenacious adhesive properties, higher tensile strength and low vapor permeability values. 4101 offers a wider window of application than water based acrylic sealants.

Product Type: 1K (1 component) Sealant, Elastomeric Sealant, Sealer, Solvent free (100% Solids) Sealant

Application Area: Seam Sealing

Cure Method: Moisture Cure

Application Method: Brush, Roller

Chemical Family: Polyurethanes (PU)

Technical Data SheetSafety Data Sheet
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Identification & Functionality

Chemical Family

Polyurethanes (PU)

Product Type

1K (1 component) Sealant,

Elastomeric Sealant,

Sealer,

Solvent free (100% Solids) Sealant

Technologies

Ready-to-Use Products

Product Families

Ready-to-Use Products — Adhesives & Sealants

Caulks & Sealants

Features & Benefits

Ready-to-Use Product Features

Excellent Seal Properties,

Good Adhesion,

High Solids Content,

High Tensile Strength,

Low Gas Permeability

Applications & Uses

Markets

Building & Construction

Applications

Building & Construction — Building Envelope & Roofing

Waterproofing & Weatherproofing

Building & Construction — Building Materials

Sealants & Caulks

Application Area

Seam Sealing

Application Method

Brush,

Roller

Cure Method

Moisture Cure

Recommended Uses
  • 4101 is specifically designed as a protective sealant during the detail phase of complete elastomeric roof coating restoration work.
  • This product is formulated to seal fasteners and seams and penetrations on a metal roof systems, seams and penetrations on single ply membrane systems and fill cracks and voids on older BUR systems. In addition, 4101 is an ideal all-purpose sealant to quickly and permanently seal leak areas on virtually any roofing system.
General Application Instructions
  • 4101 may be applied by heavy brush. Apply 4101 only to clean, dry, sound surfaces free of loose particles or other foreign matter.
  • Base coats MUST be applied to 4101 coated sections within 48 hours to insure proper adhesion. Apply 4101 at the maximum thickness of 32 wet mils to ensure proper curing.
Coverage Rates

Approx. 750 fasteners per gallon or 150 fasteners per 20 oz sausage tube; 100 linear feet of seam at 4” wide and 40 wet mils per gallon.

Properties

Color

Black,

Grey

Typical Physical Properties
ValueUnitsTest Method / Conditions
Total Solids (Weight)77 - 81%ASTMD1644
Weight Per Gallon9.0 - 9.4lb per gallon-
Flash Point80.0°F-
Viscosity20000 - 40000cP-
Elongation100 - 200%-
Hardness69.0Shore A-
Tensile Strength215 - 265psi-
Permeability0.02perm inch-
Service Temperature-50 to 200°F-
Water Absorption2.4%-
AdhesionExceeds Tensile--
Cure Times (Dry To Touch)6.0hours-
Cure Times (Tack Free)12 - 16hours-
Cure Times (Recoat)12 - 16hours-

Safety & Health

Limitations & Precautions
  • Avoid application over unintended areas; adhesive properties make removal difficult after product has cured on any surface. Avoid moisture contamination in sealed containers.
  • Store in dry environment between 55º and 75º. Keep away from heat, open flame or sparks.
  • Use only in well ventilated areas with proper protective equipment. Avoid breathing vapor or mist.

Storage & Handling

Shelf Life
90 days at 40°F to 90° F
Clean Up
Xylene