Loctite 277 Acrylic Anaerobic Threadlocker Red 50ml

Loctite 277 Acrylic Anaerobic Threadlocker Red 50ml

• Strength : High
• Temperature : -65 - 300 °F
• Viscosity : 6000 - 8000 mPa.s (cP) Brookfield
• Key Substrates : Metal: Brass, Metal: Steel, Metal: Steel - Stainless Steel
• Color : Red
• Curing Type : Anaerobic
• Application : Threadlocking

 

LOCTITE® 277 is a red, high strength, high viscosity, methacrylate-based threadlocking adhesive. It has a fixture time on steel of 30 min, brass 25 min and stainless steel 270 min making it deal for applications where migration of the adhesive must be prevented. Can tolerate slight contaminations of industrial oils. Suited to large threads. Fluoresces to allow monitoring.

• High viscosity
• Breakaway torque on M10 bolts of 32 Nm
• Prevents unwanted movement, loosening, leaks and corrosion
• Resists vibration
• High strength
• Suited to large threads

 
LOCTITE®
277 is designed for the permanent locking and
sealing of threaded fasteners. The product cures when
confined in the absence of air between close fitting metal
surfaces and prevents loosening and leakage from shock and
vibration. Typical applications include the locking and sealing
of large bolts and studs (M25 and larger).

Mil-S-46163A

LOCTITE®
277 is tested to the lot requirements of Military
Specification Mil-S-46163A. Note: This is a regional approval.
Please contact your local Technical Service Center for more
information and clarification.

ASTM D5363

Each lot of adhesive produced in North America is tested to
the general requirements defined in paragraphs 5.1.1 and
5.1.2 and to the Detail Requirements defined in section 5.2.

TYPICAL CURING PERFORMANCE

Cure Speed vs. Substrate

The rate of cure will depend on the substrate used. The graph
below shows the breakaway strength developed with time on
M10 steel nuts and bolts compared to different materials and
tested according to ISO 10964.

Cure Speed vs. Bond Gap

The rate of cure will depend on the bondline gap. Gaps in
threaded fasteners depends on thread type, quality and size.
The following graph shows shear strength developed with time
on steel pins and collars at different controlled gaps and tested
according to ISO 10123.

Cure Speed vs. Temperature

The rate of cure will depend on the temperature. The graph
below shows the breakaway strength developed with time at
different temperatures on M10 steel nuts and bolts and tested
according to ISO 10964.

Cure Speed vs. Activator

Where cure speed is unacceptably long, or large gaps are
present, applying activator to the surface will improve cure
speed. The graph below shows the breakaway strength
developed with time on M10 zinc dichromate steel nuts and
bolts using Activator SF 7471™ and SF 7649™ and tested
according to ISO 10964.

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
Material Safety Data Sheet (MSDS).
Where aqueous washing systems are used to clean the
surfaces before bonding, it is important to check for
compatibility of the washing solution with the adhesive. In
some cases these aqueous washes can affect the cure and
performance of the adhesive.
This product is not normally recommended for use on plastics
(particularly thermoplastic materials where stress cracking of
the plastic could result). Users are recommended to confirm
compatibility of the product with such substrates.

Directions for use:

For Assembly

1. For best results, clean all surfaces (external and internal)
   with a LOCTITE®
   cleaning solvent and allow to dry.
2. If the material is an inactive metal or the cure speed is too
   slow, spray all threads with Activator 7471™ or 7649™
   and allow to dry.
3. To prevent the product from clogging in the nozzle, do not
   allow the tip to touch metal surfaces during application.
4. For Thru Holes, apply several drops of the product onto
   the bolt at the nut engagement area.
5. For Blind Holes, apply several drops of the product down
   the internal threads to the bottom of the hole.
6. For Sealing Applications, apply a 360° bead of product
   to the leading threads of the male fitting, leaving the first
   thread free. Force the material into the threads to
   thouroughly fill the voids. For bigger threads and voids,
   adjust product amount accordingly and apply a 360° bead
   of product on the female threads also.
7. Assemble and tighten as required.

For Disassembly

1. Apply localized heat to nut or bolt to approximately 250
   °C. Disassemble while hot.

For Cleanup

1. Cured product can be removed with a combination of
   soaking in a Loctite solvent and mechanical abrasion
   such as a wire brush.

Loctite Material Specification

LMS dated September-1, 1995. 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.