TaftGrip is a single-component MS polymer (silane-modified) adhesive sealant that cures with atmospheric moisture into a durable, paintable elastomer. It is non-corrosive, odourless and free of solvents, isocyanates, silicones and PVC, with strong primerless adhesion to a wide variety of substrates. TaftGrip skins in 5 to 10 minutes, reaches functional cure in 24 hours and full cure in 7 days, and holds from -40 C to +90 C, which suits bus, truck, marine and panel bonding and sealing.
PRODUCTS · MS POLYMER
TaftGrip
Single-component, non-corrosive, odourless MS Polymer (silane-modified) adhesive sealant that cures with atmospheric moisture into a durable, paintable elastomer with strong primerless adhesion to many substrates.
Industries: Automotive, Bus & Truck, Construction, Marine & Shipbuilding, Metal Fabrication, Signage, Transportation
MS PolymerMetalPlasticsGlassWood
Service temp
-40 to 90 °C
Cure speed
5-10 minutes (skin)
Headline properties from the TaftGrip Technical Data Sheet. Refer to the current TDS for full specification.
Specifications last reviewed
Specifications
| Chemistry | Silane-modified polymer (MS Polymer) |
|---|---|
| Appearance | Off-white / grey smooth paste |
| Specific gravity | 1.58-1.62 |
| Fixture time | 5-10 minutes (skin) |
| Full cure | 24 h functional, 7 days full |
| Service temperature | -40°C to 90°C |
| Shelf life | 9 months |
| Packaging | 300 mL cartridge, 600 mL sausage |
Substrate compatibility
- Metal
- Plastic
- Glass
- Wood
Technical Data Sheet
Download the current Technical Data Sheet for full specification, handling, and cure data. The complete TDS library cross-references every MightyLoc family by chemistry, substrate, and service window.
Compliance
RoHS statements and Safety Data Sheets for this product are available on request. Contact the MightyLoc team and we will send the current documents.
Body panels · 3 points
01 / 03
Glazing surround
Run a continuous bead of the non-sag paste around the frame, then set the glass surround in place and press it home. It bonds and seals in one step and stays flexible, so the joint holds under vibration.
02 / 03
Body-panel joints
Apply a bead along the frame and press the body or trim panel onto it. The elastic bond holds the panel while flexing to absorb body flex and road shock, and seals the joint so no separate gasket is needed.
03 / 03
Lower fascia
Run a bead along the mounting line and press the lower fascia onto it, then tool the edge smooth. The non-sag paste holds the panel and seals the seam against water and dust, staying flexible under road vibration.
Tap a point on the image to see where and how to apply.
Panel & board · 2 points
01 / 02
Press to place
Apply the non-sag paste to the back of the panel or board, then press it home onto the clean surface. It grabs fast and holds position straight away, so vertical panels stay put without props while it builds.
02 / 02
Bonded seams
Lay a bead along the seam to bond and seal it in one step, then tool it smooth. The cured joint stays flexible and paintable, so it moves with the surface and can be finished to match the panels around it.
Tap a point on the image to see where and how to apply.
Application guidance last reviewed
Technical tools: Cure-time guide Service-temperature guide Substrate-pair selector
Frequently asked questions
Taft Grip is a single-component, silane-modified polymer adhesive sealant that cures with atmospheric humidity into a durable, low-modulus elastomer. It bonds and seals a wide range of substrates without primer and is used in bus and railway carriage construction, automotive window glass glazing, ship and boat building, metal fabrication, signage, and building work. It cures fully in 7 days at 30 C, 55% RH.
Taft Grip forms a skin in 5 to 10 minutes, reaches functional cure in 24 hours, and cures fully in 7 days at 30 C and 55% relative humidity. Curing runs inward from the surface, so higher humidity and temperature speed it up while thicker beads and larger unexposed areas extend it. Allow full cure before applying heavy service loads.
Cured Taft Grip has a continuous in-service temperature range of -40 C to 90 C and tolerates short exposure of up to one hour at around 120 C. As a silane-modified polymer it resists thermal cycling, aging, and weathering without hardening, shrinking, or cracking, which suits it to both interior and exterior bus, railway, and building applications.
Yes, Taft Grip is paintable and accepts most conventional paint systems, either wet-on-wet after skin forming or, for best results, after full cure. Always run a compatibility trial first. Avoid PVC-based paints and oxidation-drying paints (oil or alkyd resin based), and do not subject over-painted Taft Grip to baking temperatures until it has reached full cure.
Taft Grip achieves high bond strength on many substrates without a primer, including suitable paint and epoxy-coated systems. Vitrochem still recommends pre-testing to confirm whether a primer is needed for a given substrate. Surfaces must be clean and free of dirt, oil, and release agents; cleaning with a solvent such as acetone or methyl ethyl ketone can improve adhesion.
Taft Grip may not adhere to certain plastics such as polyethylene, polypropylene, polyacetal, and PTFE (Teflon). It is designed to bond a wide variety of substrates, including MS and ABS, but any substrate not listed by Vitrochem should be trial-bonded first. Plastic parts must have any manufacturing release agents removed before bonding or sealing.
No, Taft Grip is non-corrosive, odourless, and free of solvents, isocyanates, silicones, and PVC. It is a low-modulus silane-modified polymer with a specific gravity of 1.58 to 1.62 at 30 C and a non-sag (non-slump) paste consistency, which lets it hold in vertical and overhead joints without slumping during application.
Taft Grip has a shelf life of 9 months from the date of manufacture when stored at or below 30 C in original, unopened containers. Because it cures with moisture, keep cartridges and sausages tightly closed when not in use. A plug of cured material may form in the nozzle tip; it removes easily and does not affect the remaining contents.
Cured Taft Grip resists fresh water, sea water, motor oil, isopropanol, and salt fog at 95% RH, and shows good UV and weathering resistance for exterior use. It is only temporarily resistant to fuels, mineral oils, and vegetable or animal oils, and should not be used with chlorine, strong oxidizers, or in pure-oxygen systems.
Taft Grip dispenses straight from a 300 mL HDPE cartridge or 600 mL aluminium sausage using a manual or pneumatic gun, with pneumatic pressure set to 2 or 5 bar. Apply a continuous, uniform bead to clean, prepared surfaces and assemble parts before the skin forms in 5 to 10 minutes. Do not apply below 10 C or above 40 C; cold product raises viscosity, so warm it to room temperature first.