Tec-Bond® 235 & 251 Pre-Applied Fastener Adhesives and Threadlockers

Tectorius® and Tec-Bond® are registered trademarks of Maelstrom Chemical Technologies, LLC. All rights reserved. 3M™ and Scotch-Grip™ are trademarks of 3M Corporation. 

Tec Bond 235 & 251 Pre-Applied Fastener Adhesives and Threadlockers

DESCRIPTION:

Tec-Bond 235 Series of thread locking products are room-temperature curing, microencapsulated adhesives, while Tec-Bond 251 is a high-temperature resistant, microencapsulated adhesive. They can be applied to male or female threaded fasteners of virtually all sizes, configurations, compositions and finishes.

Tec-Bond 235 & 251 contain microencapsulated reactive elements that are suspended in a quick-curing resin, carried in a solvent medium. 

The shearing forces caused by installation of the fastener to the mating part release reactive compounds that cure into a tough, well-bonded polymer. The resulting matrix rapidly bonds the surfaces, semi-permanently locking parts together and sealing leak paths. 

Tec-Bond 235 & 251 offer consistent and predictable torque values, and requires no heat or primers for curing.

 

PRODUCT FEATURES:

» Unaffected By Automotive Fluids: Tec-Bond 235 & 251 resist and seal against most automotive fluids: oil, water, antifreeze, and gasoline have virtually no effect once final cure has been achieved.  Tec-Bond 251 is designed to function in high-temperature environments for extended periods of time, such as in engine compartments.

» Variety of Strengths, Colors, & Viscosities: these products are available in a variety of colors (for easy part inspection) and formulas to best suit the customers’ coating equipment. A wide range of similar Tec-Bond products are formulated to satisfy most thread locking requirements. 

» Fast Fixture Times: Under typical conditions, fixture is achieved within 90 minutes.

» Saves Money: Tec-Bond 235 & 251 save valuable time and are less expensive than applying bottled thread locking compounds at the point of assembly.

» Suitable for Production Coating: Tec-Bond 235 & 251 are available in viscosities suitable for use on a broad range of production coating equipment.

Tec-Bond 235 and 251 Thread Locking Adhesives and Microencapsulated Adhesives

SPECIFICATIONS: 

GRADE:

235

235 SC

235 DPC

251

251 SC

251DPC

Standard Color:

SapphireSapphireSapphireOrangeOrangeOrange

Specialty Colors:

Yellow, Red, GreenYellow, Red, GreenYellow, Red, GreenNeutral,Yellow, Red, GreenNeutral,Yellow, Red, GreenNeutral,Yellow, Red, Green

Variant Purpose:

Standard PurposeHighly concentrated for transport efficiencySolvent removed for transport efficiencyStandard FormulaHighly concentrated for transport efficiencySolvent removed for transport efficiency

Carrier Medium:

Toluene Solvent ConcentrateNone/Dry ConcentrateTolueneSolvent ConcentrateNone/Dry Concentrate

Installation Torque (in/lbs):

<10<10<10<10<10<10

Break/Prevail Torque after Full Cure (in/lbs) 

225/250225/250225/250225/250225/250225/250

                    (Nm)

25/2825/2825/2825/2825/2825/28

Temperature Range (°F)

-65°/300°-65°/300°-65°/300°-65°/350°-65°/350°-65°/350°

Temperature Range (°C)

-54°/150°-54°/150°-54°/150°-54°/175°-54°/175°-54°/175°

Fixture Time

>90 min.>90 min.>90 min.>90 min.>90 min.>90 min.

On-Part Life *

4 years4 years4 years4 years4 years4 years

Full Cure Time @ Room Temperature

72 hrs.72 hrs.72 hrs.>72 hrs.>72 hrs.>72 hrs.

Bulk Shelf Life

1 year1 year3 years1 year1 year3 years

TORQUE COMPARISON CHART

 

Tec-Bond® 235

Tec-Bond® 251

Tec-Bond® 240 (water based)

Tec-Bond® 261 (water based)

PRODUCT DESCRIPTION:

Microencapsulated Epoxy-based threadlocking system. Solvent basedMicroencapsulated Epoxy-based threadlocking system. Solvent basedMicroencapsulated Epoxy-based threadlocking system; Water based, zero VOC emission carrier.           Microencapsulated Epoxy-based threadlocking system; Water based, zero VOC emission carrier.  

COMPETITOR REPLACEMENT:

3M Fastener Adhesive 2353        (formerly known as 3m™  Scotch-grip™)3M Fastener Adhesive  2510      (formerly known as 3m™  Scotch-grip™)Unique ‘GREEN’,            environmentally friendly system intended to replace solvent-based 3MUnique ‘GREEN’,            environmentally friendly system intended to replace solvent-based 3M

STANDARD COLORS:

Sapphire, YellowOrange, NeutralSapphire, GreenOrange, Neutral

EXPECTED PERFORMANCE  Using M10x1.5, 8.8 coarse, zinc  phosphate plated bolt using a plain steel nut

 

TYPICAL BREAKAWAY TORQUE:  36 Nm=319 in*lb                       TYPICAL PREVAILING TORQUE:27 Nm = 238 in*lbTYPICAL BREAKAWAY TORQUE:  36 Nm=319 in*lb       TYPICAL PREVAILING TORQUE:28 Nm = 248 in*lbTYPICAL BREAKAWAY TORQUE:  36 Nm=319 in*lb         TYPICAL PREVAILING TORQUE:27 Nm = 238 in*lbTYPICAL BREAKAWAY TORQUE:  36 Nm=319 in*lb               TYPICAL PREVAILING TORQUE:27 Nm = 238 in*lb

EXPECTED PERFORMANCE  Using M10x1.5, 8.8 coarse, bright zinc plated bolt using a bright zinc plated nut. Retail grade

 

TYPICAL BREAKAWAY TORQUE:  25 Nm=221 in*lb                       TYPICAL PREVAILING TORQUE:14 Nm = 123 in*lb                                        TYPICAL BREAKAWAY TORQUE:  23 Nm=203 in*lb       TYPICAL PREVAILING TORQUE:14 Nm = 123 in*lbTYPICAL BREAKAWAY TORQUE:  24 Nm=212 in*lb       TYPICAL PREVAILING TORQUE:12 Nm = 106 in*lbTYPICAL BREAKAWAY TORQUE:  24 Nm=212 in*lb                 TYPICAL PREVAILING TORQUE:12 Nm = 106 in*lb

EXPECTED PERFORMANCE  Using M10x1.25, Magni ™ finished bolt using a bright zinc nut.

 

TYPICAL BREAKAWAY TORQUE:  10 Nm=89 in*lb                       TYPICAL PREVAILING TORQUE:6 Nm = 53 in*lbTYPICAL BREAKAWAY TORQUE:  9 Nm=80 in*lb           TYPICAL PREVAILING TORQUE:5 Nm = 45 in*lbTYPICAL BREAKAWAY TORQUE:  10 Nm=89 in*lb       TYPICAL PREVAILING TORQUE:6 Nm = 53 in*lbTYPICAL BREAKAWAY TORQUE:  10 Nm=89 in*lb                 TYPICAL PREVAILING TORQUE:6 Nm = 53 in*lb

EXPECTED PERFORMANCE  Using M4 304 stainless steel screw and 304 Stainless steel nut

TYPICAL BREAKAWAY TORQUE:  1.8 Nm=16 in*lb                       TYPICAL PREVAILING TORQUE:1.5 Nm = 13.3 in*lbTYPICAL BREAKAWAY TORQUE:  1.6 Nm=14 in*lb         TYPICAL PREVAILING TORQUE:1.5 Nm = 13.3 in*lbTYPICAL BREAKAWAY TORQUE:  2 Nm=17.7 in*lb       TYPICAL PREVAILING TORQUE:1.8 Nm = 16 in*lbTYPICAL BREAKAWAY TORQUE:  2 Nm=17.7 in*lb                       TYPICAL PREVAILING TORQUE:1.8 Nm = 16 in*lb

EXPECTED PERFORMANCE      Using M1.4 410 Stainless steel screw using 410 stainless steel nut

 

TYPICAL BREAKAWAY TORQUE:  0.8kg*cm=0.7 in*lb                       TYPICAL PREVAILING TORQUE:N/ATYPICAL BREAKAWAY TORQUE:  0.5kg*cm=0.4 in*lb     TYPICAL PREVAILING TORQUE:N/ATYPICAL BREAKAWAY TORQUE:  0.8kg*cm=0.7 in*lb     TYPICAL PREVAILING TORQUE:N/ATYPICAL BREAKAWAY TORQUE:  0.8kg*cm=0.7 in*lb                       TYPICAL PREVAILING TORQUE:N/A