PRODUCT DESCRIPTION
LOCTITE® 268 provides the following product characteristics:
Technology Acrylic
Chemical Type Dimethacrylate ester
Appearance (uncured) Blue, wax consistencyLMS
Appearance (form) Stick
Fluorescence Positive under UV lightLMS
Components One component - requires no mixing
Cure Anaerobic
Application Threadlocking
Strength Medium
LOCTITE® 268 is a medium strength anaerobic threadlocking
material. It is supplied as a wax-like semi-solid, conveniently
packaged in a self-feeding stick applicator. As with liquid
anaerobic products, this material develops its cured properties
in the absence of air when confined between close fitting metal
surfaces. It achieves consistent strength and can be used on a
variety of metal substrates. It is particularly well suited for
applications where a liquid product may be too fluid to stay on
a part or be difficult to apply. It stores easily and allows for
direct contact to a threaded part during application to ensure
even coverage.
NSF International
Certified to ANSI/NSF Standard 61 for use in commercial and
residential potable water systems not exceeding 82°C.
TYPICAL PROPERTIES OF UNCURED MATERIAL
Specific Gravity @ °C 1.10
Melting Point, °C >80
Unworked Penetration, ISO 2137, 1/10 mm 90 to 140LMS
Lubricity, K-Factor:
3/8 x 16 zinc phosphate & oil nuts and bolts:
22.2 kN tension, control (no product) 0.20
22.2 kN tension, with product 0.19
26.7 kN tension, control (no product) 0.20
26.7 kN tension, with product 0.19
(In critical applications, it is necessary to determine
the K-Factor independently. Loctite makes no
warranty of specific performance on any individual
fastener)
TYPICAL CURING PERFORMANCE
Cure Speed vs. Substrate
The rate of cure will depend on the substrate used. The graph
below shows the breakloose strength developed with time on
3/8 x 16 degreased steel nuts & bolts compared to different
materials and tested according to ISO 10964. All samples
pre-torqued to 5 N·m. Product applied to bolts only.
% of Full Strength on Steel
Cure Time
125
100
75
50
25
0
5min 10min 30min 1h 3h 6h 24h
Steel
Zinc Dichromate
Zinc Phosphate & Oil
Stainless Steel
Cure Speed vs. Temperature
The rate of cure will depend on the temperature. The graph
below shows the breakloose strength developed with time at
different temperatures on 3/8 x 16 degreased steel nuts & bolts
and tested according to ISO 10964. All samples pre-torqued to
5 N·m. Product applied to bolts only.
% of Full Strength on Steel
Cure Time
125
100
75
50
25
0