Sealants

3M Aerospace Sealant AC-350 (Class A and Class B)

SKU: AC-350 A,B

Brand: 3M

Pricing on request

Specifications

Part Number	AC-350 A,B
Material	polysulfide, manganese-dioxide cured
Compliance	AMS-S-8802 (Class B-1/2, B-2, B-4; Type II); AMS 3276

Description

An intermediate-density, fast-cure, two-component (manganese-dioxide cured) polysulfide fuel-tank and fuselage sealant with outstanding resistance to aviation gasoline and jet fuel; it is solvent-free. Class A mixes to a pourable/brushable liquid for coating large areas quickly, while Class B mixes to a thixotropic paste with superb tooling for injection-gun or spatula application (fillet/faying-surface sealing). It stays flexible with no cracking or adhesion loss down to -65 degF.

Angad Aviation supplies this 3M product with full traceability and documentation — request a quote for current pricing, pack sizes and lead time.

Brand: 3M
Part No.: AC-350 A,B
Chemistry: polysulfide, manganese-dioxide cured
Density: intermediate
Solvent-free
Class A: pourable liquid; Class B: thixotropic paste
Service temperature: -65 to 250 degF (-54 to 121 degC)
Multiple work lives available (dash numbers)
Compliance: AMS-S-8802 (Class B-1/2, B-2, B-4; Type II); AMS 3276

Frequently asked

What are the key specifications?

Chemistry: polysulfide, manganese-dioxide cured; Density: intermediate; Solvent-free; Class A: pourable liquid; Class B: thixotropic paste; Service temperature: -65 to 250 degF (-54 to 121 degC); Multiple work lives available (dash numbers).

How do I get pricing and lead time?

Angad Aviation supplies this 3M product quote-first — request a quote and our team responds with current price, pack sizes, availability and lead time. Every order ships with full traceability and documentation.