Description
ASI 5900 is a one-part, moisture-cure fast-grab hybrid adhesive based on silyl-terminated polyether technology. It is designed for industrial and construction applications where immediate green strength is required to fixture substrates in place while the adhesive cures to a long-term durable bond. The fast initial grab reduces or eliminates the need for braces, clamps, screws, and fasteners during assembly, which is a significant practical advantage in high-volume fabrication and installation work.
ASI 5900 is 100% solids, contains no solvents or isocyanates, and will not shrink during cure. It bonds to wet substrates, cures in the presence of moisture, and will not wash off with rain. It remains consistent to dispense from 0 degrees F to 150 degrees F, making it practical across a wide range of field and shop conditions.
Key Product Details
| Property | Value |
|---|---|
| Chemistry | One-part silyl-terminated polyether (hybrid) |
| Viscosity | 2,100,000 cps |
| Hardness | 45 Shore A |
| Tensile Strength | 1.58 MPa (ASTM D412) |
| Elongation at Break | 150% |
| Modulus 100% | 1.42 MPa |
| Lap Shear | 2.15 MPa |
| Skin Formation Time | 10 minutes at 70 degrees F, 50% RH |
| Cure In-Depth After 7 Days | 13mm at 70 degrees F, 50% RH |
| Application Temperature | 32 degrees F to 150 degrees F |
| Service Temperature | -50 degrees F to 220 degrees F (intermittent to 270 degrees F) |
| Density | 14.8 lbs/gal |
| VOC Content | 9.55 grams/liter (ASTM D2369) |
| Color | Natural White |
| Package Options | 10.2 oz cartridge, 20 oz sausage pack |
| Case Quantity | 24 per case (cartridge), 12 per case (sausage) |
| Shelf Life | 12 months from date of shipment in cartridges when stored at 70 degrees F, 50% RH; 6 months in pails and drums |
| Compliances | California Proposition 65; USDA Non-Food Contact; CARB and SCAQMD; VOC Compliant (9.55 grams/liter ASTM D2369) |
Large Panel Bonding: Where ASI 5900 Stands Out
One of the most demanding applications for any adhesive is installing large format panels, full-size Corian shower walls, stone shower panels, fiberglass panels, and similar substrates, where the panel needs to go up, stay up, and hold position immediately without mechanical support while the adhesive cures fully.
Standard silicone adhesives struggle in this application for several reasons. Silicone has limited initial grab, which means panels need to be braced or held in position for extended periods. Acetoxy silicones, which are common in construction and fabrication environments, release acetic acid during cure. That vinegar-smell off-gassing can cause corrosion on sensitive metals, adhesion issues on certain substrates, and is a real problem in enclosed spaces like bathrooms and shower surrounds where ventilation is limited.
ASI 5900 solves both problems. The immediate green strength grabs and holds panels in position within minutes, which is a major time saver in high-volume fabrication and installation work. Customers running pallet quantities of ASI 5900 through Corian and stone shower panel installations report that the fast fixture time directly reduces labor and bracing requirements on the line. It contains no isocyanates and no acetoxy chemistry, so there is no acetic acid off-gassing, no vinegar odor, and no corrosion risk on metal framing or fixtures in the assembly.
For fabricators and installers asking whether there is a one-part adhesive that grabs large panels fast, holds them without bracing, and avoids the off-gassing and corrosion issues of acetoxy silicone, ASI 5900 is a direct answer to that question.
ASI 5900 vs Your Current Adhesive
Solvent-based adhesives lose volume during cure because the solvent flashes off, which can leave behind as little as 60% of the material you applied. Water-based adhesives have the same problem due to water loss during cure. ASI 5900 is 100% solids, so what you apply stays. That means you can often reduce adhesive consumption per joint just by switching chemistry, without changing application method or bead size.
One-part polyurethane adhesives contain isocyanates and can bubble or outgas when moisture is present before cure, which limits their usefulness in field conditions or on substrates that are damp. ASI 5900 cures in the presence of moisture without bubbling, will not wash off with rain, and contains no isocyanates.
When Standard Silicone or Urethane Isn’t the Right Fit
For buyers asking about alternatives to construction adhesive for large panels, one-part adhesives that hold without clamping, or fast-grab options for shower wall installation, ASI 5900 covers those questions directly. It grabs faster than silicone, bonds stronger than most one-part construction adhesives, contains none of the isocyanates found in urethane adhesives, and avoids the acetoxy off-gassing issues associated with standard silicone in enclosed spaces.
Performance in Production
- Immediate green strength fixtures substrates in place within minutes, reducing or eliminating bracing, clamping, and fastener requirements during assembly.
- Skin formation time of 10 minutes at 70 degrees F, which is significantly faster than ASI 55 and ASI 57, making it the right choice when fast fixture time matters.
- Lap shear of 2.15 MPa is higher than ASI 55 (0.90 MPa) and reflects a stronger adhesive bond profile suited for panel bonding and load-bearing applications.
- 100% solids formulation does not shrink during cure, unlike solvent-based or water-based adhesives that can lose 30 to 40% of volume.
- Bonds to wet substrates without bubbling or outgassing, and withstands immediate rain after application.
- Contains no solvents, isocyanates, or acetoxy chemistry. Low odor and MEKO-free. Suitable for use in occupied or enclosed spaces including shower surrounds and bathroom installations.
- Remains easy to dispense from 0 degrees F to 150 degrees F, consistent across cold shop conditions and hot field environments.
- Non-slump formulation holds position on vertical and overhead surfaces, which is essential for panel installation work.
- Allow 7 days for maximum strength before testing. Lower temperatures and humidity slow skin and cure times.
- Surfaces should be clean before application. IPA or acetone recommended for surface prep; do not use petroleum-based solvents.
- Do not use on polyethylene, polypropylene, or TPO without prior testing.
See It in Action
ASI 5900 instant bonding demonstration including cinder block and underwater brick bonding:
Common Applications
- Large format panel bonding including Corian, stone, and fiberglass shower walls
- RV and trailer manufacturing
- Countertop and solid surface installation
- Shower panel and tub surround installation
- Subfloor and wall panel assembly
- Roofing and building envelope systems
- Mirror and wall stone mounting
- HVAC and duct assembly
- Landscape block installation
- General industrial manufacturing and construction bonding
Common Substrates
Ceramics, fiberglass, glass, granite, marble, wood, stone, EPDM, aluminum, galvanized metal, EPS or Styrofoam insulation, porcelain, PVC and other plastics, concrete, brick, and porous surfaces.
Available Sizes
- 10.2 oz cartridge, Natural White, 24 per case
- 20 oz sausage pack, Natural White, 12 per case
- Pails and drums available; contact [email protected] or call 800-220-1966.
Related Products
Reviews
There are no reviews yet.