Welcome to Boeing distribution, formerly Aviall

3M™ Aerospace Sealant, Polysulfide, Liquid, Black, Sulfuric, 7 hr, 3.5 oz Cartridge

Part # 051141-57981=CB
Mfr. Part # 70005201762
UPC # 51141579818
3M™ aerospace sealant AC-251 black class B are two-part, quick curing, polysulfide-based canopy and windshield sealants. These products are formulated for sealing acrylic, glass and polycarbonate aircraft canopies and windshields. 3M™ AC-251 black class B sealants contain no solvents and do not craze. The sealants quickly cure and exhibit excellent adhesion and resistance to UV and weather exposure. 3M™ AC-251 black class B sealants have a thixotropic, non-sag consistency. They can be readily applied with a spatula or extrusion gun on vertical surfaces.

Features
• Maintains flexibility and bond strength for reliable performance on aircraft transparencies
• Contains no added solvents to prevent crazing on transparent surfaces
• Formulated to resist UV degradation
• Black color provides clean exterior mold lines
• Non-sag formula is easy-to-mix and apply by injection dispenser or spatula for fast application time
• Qualified to multiple aerospace material specifications

Specifications
• Series: AC-251 B-1/2
• Container Type: Cartridge
• Container Size: 3.5 oz
• Base Type: Polysulfide
• Form: Liquid
• Color: Black
• Odor/Scent: Sulfuric
• Composition: 55 to 65% Polysulfide Rubber, 30 to 40% Calcium Carbonate, <0.99% Toluene, <0.5% Carbon Black, <0.5% Quartz Silica
• Curing Time: 7 hr
• Flash Point: >=200 deg F
• Specific Gravity: 1.61
• Viscosity: 9000 to 16000 poise
• Density: 1.61 g/mL
• VOC Content: 2.5 g/L
• Applicable Materials: Acrylic, Glass, Polycarbonate
• Temperature Rating: -65 to 250 deg F Service
• Application Life: 1 hr
• Tack-Free Time: 5 hr
• Hardness Rating: 55 Shore A
• Shelf Life: 9 months
• Non-Volatile Content: 98 %

Applications
• For canopy and windshield sealant exterior moldline applications
Material is non forecasted. Orders can not be canceled or returned. Please see our returnspolicy for more information.
NSN
 
Cage Code
 
Country of origin
United States 
ECCN / USML
EAR99 
Schedule B
3214100020 
Dimensions (L x W x H)
0 x 0 x 0 IN
Total Shelf Life (days)
274 
Hazmat Code
Package Weight
0 LB
FAA Approval Code
N/R
ISBN
 
Condition
Color
 
Brand
 
Hazmat(Y/N)
LTL(Y/N)
8130-3 Eligible
No 
Forecasted
No

Save to a new or existing list
New list name
Saved list