🧪 Loctite 401 Prism Instant Adhesive – 3g | Surface-Insensitive, Fast-Bonding Super Glue for Metals, Plastics & Rubber
Loctite® 401 Prism Surface Insensitive Adhesive (3g) is a fast-curing, general-purpose cyanoacrylate adhesive designed to bond a wide range of materials including metals, plastics, elastomers, and porous substrates such as wood, paper, leather, and fabric. It is ideal for applications requiring high shear strength and quick fixture time, even on difficult or acidic surfaces.
Perfect for precision assembly, emergency repairs, and industrial use, this low-viscosity adhesive performs reliably under various environmental conditions and is NSF P1 registered for use in non-food contact areas around food processing.
🔧 Key Features & Benefits:
- ✅ Fast curing with fixture time in seconds
- ✅ Excellent performance on metal, rubber, plastics, wood, fabric, and more
- ✅ Bonds similar and dissimilar substrates
- ✅ Surface-insensitive formulation for a wider range of materials
- ✅ Low viscosity (110 cP) for thin, even application
- ✅ Operates in temperatures from -65°F to 250°F (-54°C to 120°C)
- ✅ High shear strength: up to 3,200 psi on grit-blasted steel
- ✅ Ideal for quick repairs, electronics, medical, and industrial assembly
- 📦 Product Specifications:
- Brand: LOCTITE®
- Model: 401 Prism
- Size: 3g
- Color: Ultra-clear
- Cure Type: Humidity-activated (cyanoacrylate)
- Viscosity: 110 mPa·s (cP)
- Operating Temperature: -65°F to 250°F
- Substrates: Metals, plastics, elastomers, porous materials
- Application: Bonding, assembly, repair
- 🛠️ Typical Applications:
- Electronics & sensor assembly
- General-purpose industrial bonding
- Medical devices (non-implant)
- Furniture and cabinetry repairs
- Bonding small parts and trims
- Model making, crafts, and hobby work
- Shear Strength, Grit Blasted Steel : 3200 psi
- Temperature : -65 - 250 °F
- Viscosity : 110 mPa.s (cP) Brookfield
- Key Substrates : Metals , Plastics and Elastomers
- Color : Clear: Ultra Clear
- Curing Type : Humidity
- Application : Bonding
LOCTITE® 401 is a fast curing instant adhesive designed for the assembly of difficult-to-bond materials requiring uniform stress distribution and high tensile and/or shear strength. The product provides for the rapid bonding of a wide range of materials, including metals, plastics and elastomers. LOCTITE 401 is also suited to bonding porous materials such as wood, paper, leather and fabric. Perfect for all quick repairs and all types of small emergency repairs.
- Universal instant adhesive
- Very high strength on close-fitting parts
- Perfect for all quick repairs and all types of small emergency repairs.
- Bonds a wide range of similar or dissimilar substrates (metals, rubber, wood, cardboard, ceramics as well as most plastics)
LOCTITE®
401™ is designed for the assembly of difficultto-bond materials which require uniform stress distribution and
strong tension and/or shear strength. The product provides
rapid bonding of a wide range of materials, including metals,
plastics and elastomers. LOCTITE®
401™ is also suited for
bonding porous materials such as wood, paper, leather and
fabric.
NSF International
Registered to NSF Category P1 for use as a sealant where
there is no possibilty of food contact in and around food
processing areas. Note: This is a regional approval. Please
contact your local Technical Service Center for more
information and clarification.
TYPICAL CURING PERFORMANCE
Under normal conditions, the atmospheric moisture initiates the
curing process. Although full functional strength is developed
in a relatively short time, curing continues for at least 24 hours before full chemical/solvent resistance is developed.
Cure Speed vs. Substrate
The rate of cure will depend on the substrate used. The table
below shows the fixture time achieved on different materials
at 22 °C / 50 % relative humidity. This is defined as the time to
develop a shear strength of 0.1 N/mm².
Cure Speed vs. Bond Gap
The rate of cure will depend on the bondline gap. Thin bond
lines result in high cure speeds, increasing the bond gap will
decrease the rate of cure.
Cure Speed vs. Humidity
The rate of cure will depend on the ambient relative humidity.
Higher relative humidity levels result in more rapid speed of
cure.
Cure Speed vs. Activator
Where cure speed is unacceptably long due to large gaps,
applying activator to the surface will improve cure speed.
However, this can reduce ultimate strength of the bond and
therefore testing is recommended to confirm effect.
GENERAL INFORMATION
This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected as
a sealant for chlorine or other strong oxidizing materials.
For safe handling information on this product, consult the
Safety Data Sheet (SDS).
Directions for use:
- Bond areas should be clean and free from grease. Clean
all surfaces with a Loctite®
cleaning solvent and allow to
dry. - To improve bonding on low energy plastic surfaces,
Loctite® Primer may be applied to the bond area. Avoid
applying excess Primer. Allow the Primer to dry. - LOCTITE® Activator may be used if necessary. Apply it to
one bond surface (do not apply activator to the primed
surface where Primer is also used). Allow the Activator to dry. - Apply adhesive to one of the bond surfaces (do not apply
the adhesive to the activated surface). Do not use items
like tissue or a brush to spread the adhesive. Assemble
the parts within a few seconds. The parts should be
accurately located, as the short fixture time leaves little
opportunity for adjustment. - LOCTITE®
Activator can be used to cure fillets of product
outside the bond area. Spray or drop the activator on the
excess product. - Bonds should be held fixed or clamped until adhesive has
fixtured. - Product should be allowed to develop full strength before
subjecting to any service loads (typically 24 to 72 hours
after assembly, depending on bond gap, materials and
ambient conditions).
Loctite Material Specification
LMS dated December-22, 2011. Test reports for each batch
are available for the indicated properties. LMS test reports
include selected QC test parameters considered appropriate to
specifications for customer use. Additionally, comprehensive
controls are in place to assure product quality and
consistency. Special customer specification requirements may
be coordinated through Henkel Quality.
Storage
Store product in the unopened container in a dry location.
Storage information may be indicated on the product container
labeling.
Optimal Storage: 8 °C to 21 °C. Storage below 8 °C or
greater than 28 °C can adversely affect product properties.
Material removed from containers may be contaminated during
use. Do not return product to the original container. Henkel
Corporation cannot assume responsibility for product which
has been contaminated or stored under conditions other than
those previously indicated. If additional information is required,
please contact your local Technical Service Center or
Customer Service Representative.
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