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3M™ AC-730B2 Aerospace Sealant 70005203941, 4.5 oz

Part # 051141-58198=CB
Mfr. Part # 70005203941
UPC # 51141581989
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3M™ AC-730B2 class B non-sag aerospace sealant is ideal for offering effective barrier against the common causes of corrosion. This product comes in two parts which includes part-A catalyst and part-B base. The liquid part-A catalyst of sealant is black in color, while the thixotropic paste part-B base is off-white in color. This slight odored part-A catalyst has a specific gravity greater than or equal to 1.58 and VOC contents of 0.9 grams per liter. This sulfurous odored part-B base has a specific gravity of 1.5 and VOC contents of 3.8 grams per liter. The sealant is supplied in a 4.5-ounce container and can be mixed in a 100 base/10 catalyst ratio by weight to form a mixed compound. It requires 2 hours for application and will be sufficiently cured after 24 hours. The product withstands a temperature range of -65 to 250 degrees F.


  • Efficiently maintains flexibility and bond strength on various metals
  • Easy to apply using spatula, extrusion gun or injection dispenser
  • Provides low shrinkage results in less rework
  • Density of 1.58 grams per liter for part-A catalyst and 1.5 grams per liter for part-B base
  • Viscosity of 9500 to 16,000 poise at 77 degrees F for part-B base
  • Withstands a tensile strength of 200 psi
  • Flash point greater than or equal to 200 degrees F


  • Employs non-chromate corrosion inhibitive formula, thereby helping to comply with chromate reduction initiatives
  • Suitable for use on most metal substrates including aluminum and between other dissimilar metals


  • Seals faying surfaces of mating parts
  • Seals joints from passage of liquid or air
  • Prevents corrosion and channeling leakage


  • AMS 3265
  • FAM-3104
  • LMA MU006 Type I, DPM 5896-2 and 5PTMUT06 Type I
Item currently out of stock
Cage Code
Country of origin
United States 
Schedule B
Dimensions (L x W x H)
0 x 0 x 0 IN
Total Shelf Life (days)
Hazmat Code
Package Weight
0 LB
FAA Approval Code
8130-3 Eligible
WARNING: This product can expose you to chemicals including LEAD and SILICA, CRYSTALLINE (AIRBORNE PARTICLES OF RESPIRABLE SIZE) which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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