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3M Aerospace Sealant AC-251 Black B-1/2, 3.5 oz Kit, 24 Kit/Case

Hisco #:70005201804-31180

MFG #:AC-251

Made in the USA
This product is often used in the aerospace industry. Please refer to spec information in the product description for more detail.
This item can be downpacked through our Adhesive Materials Group division. Request a quote for more information.
No Cancel, No Returns. Orders placed for this product are non-refundable and cannot be cancelled.
Our Price: $104.36 KT
List Price: 150.28 KT
Manufacturer Lead Time When Not In Stock70 days
Minimum Order QTY: 24
Item must be ordered in multiples of 24
QuantityPriceSave
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3M™ Aerospace Sealant AC-251 is our two-part, manganese dioxide cured, polysulfide based sealant for aircraft windshields, canopies and windows. This quick curing product is easy to tool, and the non-sag formula holds its shape on vertical and horizontal surfaces. AC-251 is effective for acrylic, glass, and polycarbonate aircraft transparencies and exterior mold line applications.

Clearly Effective
3M™ Aerospace Sealant AC-251 is designed to create an aesthetically pleasing and highly effective seal. Its formulation prevents crazing on adjacent transparent surfaces, making our black, non-sagging product look as good as it performs. AC-251 is designed for optimal performance when used with 3M™ Adhesion Promoter AC-137.

When mixed, 3M Aerospace Sealant AC-251 is a thixotropic paste formulated for easy application by injection gun or spatula. AC-251 provides superb tooling properties and quick cure times to help meet a wide range of production process needs. It is available as a two-part product in both kit and bulk-packaging forms, to meet a variety of application requirements. AC-251 is ideal for sealing out moisture and corrosive elements. It is available in 1/2, 1 and 2 hour work lives and typical cure times of 4, 7 and 9 hours, respectively.

Smart Sealants, Robust Results
When you use 3M Sealants, you're applying science, ingenuity, aerospace expertise and cost saving solutions. They have outstanding resistance to aviation fuel and petroleum products common to the aircraft industry. 3M™ Aerospace Sealant AC-251 is carefully formulated for customers in the aerospace industry. Always read the SDS and Tech Data Sheet along with your internal governing documents prior to use.

Our Best for Your Best
3M is proud to partner with organizations across the spectrum of aerospace and related industries. Enabling efficiencies, reducing process times and lowering aircraft weight is how we execute our never-ending mission to offer best-in-class adhesives, sealants, surface protection products and composite resins that effectively reduce costs on multiple fronts. Professionals across the industry know the numerous advantages of 3M Aerospace. Our brand is widely recognized for the highest standards of quality and performance, adding value to the final results. By engineering reliability, longevity and value into all of our products, we have a history of saving money by reducing waste, rework and time.

3M AC-251 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
3M AC-251 Specifications:
  • Color: Black
  • Package Quantity: 24 KIT
  • Part Number: AC-251

Product Description

3M™ Aerospace Sealant AC-251 is our two-part, manganese dioxide cured, polysulfide based sealant for aircraft windshields, canopies and windows. This quick curing product is easy to tool, and the non-sag formula holds its shape on vertical and horizontal surfaces. AC-251 is effective for acrylic, glass, and polycarbonate aircraft transparencies and exterior mold line applications.

Clearly Effective
3M™ Aerospace Sealant AC-251 is designed to create an aesthetically pleasing and highly effective seal. Its formulation prevents crazing on adjacent transparent surfaces, making our black, non-sagging product look as good as it performs. AC-251 is designed for optimal performance when used with 3M™ Adhesion Promoter AC-137.

When mixed, 3M Aerospace Sealant AC-251 is a thixotropic paste formulated for easy application by injection gun or spatula. AC-251 provides superb tooling properties and quick cure times to help meet a wide range of production process needs. It is available as a two-part product in both kit and bulk-packaging forms, to meet a variety of application requirements. AC-251 is ideal for sealing out moisture and corrosive elements. It is available in 1/2, 1 and 2 hour work lives and typical cure times of 4, 7 and 9 hours, respectively.

Smart Sealants, Robust Results
When you use 3M Sealants, you're applying science, ingenuity, aerospace expertise and cost saving solutions. They have outstanding resistance to aviation fuel and petroleum products common to the aircraft industry. 3M™ Aerospace Sealant AC-251 is carefully formulated for customers in the aerospace industry. Always read the SDS and Tech Data Sheet along with your internal governing documents prior to use.

Our Best for Your Best
3M is proud to partner with organizations across the spectrum of aerospace and related industries. Enabling efficiencies, reducing process times and lowering aircraft weight is how we execute our never-ending mission to offer best-in-class adhesives, sealants, surface protection products and composite resins that effectively reduce costs on multiple fronts. Professionals across the industry know the numerous advantages of 3M Aerospace. Our brand is widely recognized for the highest standards of quality and performance, adding value to the final results. By engineering reliability, longevity and value into all of our products, we have a history of saving money by reducing waste, rework and time.

3M AC-251 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
3M AC-251 Specifications:
  • Color: Black
  • Package Quantity: 24 KIT
  • Part Number: AC-251

Technical Information

Brand3M
Product TypeAerospace Sealant
ColorBlack
Primary ColorBlack
Chemical TypePoly Sulfide
Material CompatibilityPlastic
Cure Time4 h
Physical FormLiquid
Container Size3.5 oz
Container TypeKit
OdorSulphurous
Mix Ratio10:100
Number of Components2
Specific Gravity1.61
Elongation at Break370 %
Tensile Strength350 psi
Viscosity Measurement9000 to 16000 poise
VOCs Content2.1 g/l
Hardness55 Shore A
Shelf Life9 month
ApplicationsCanopy and Windshield Sealant; Exterior Moldline Applications
Maximum Operating Temperature+250 °F
Minimum Operating Temperature-65 °F
Package Quantity24 KIT
Weight: 0.475
Country Of Origin: US
Our Price: $104.36 KT
List Price: 150.28 KT
 
Minimum Order QTY: 24
Item must be ordered in multiples of 24
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