Achieve more efficient aviation with 3M^TM Aircraft Sealants

3M offers the durable, high quality sealants for aerospace manufacturing, maintenance and repair. Only 3M Aerospace Sealants cover your needs for aircraft performance, lightweighting and curing time.

3M Aerospace Sealants deliver:

• High temperature resilience and fuel efficiency
• Resistance to degradation from jet fuel exposure
• Streamlined production and increased efficiency
• Reduced waste and diminished costs

Shop All 3M Aerospace Sealants
Class B Polysulfide Sealant Tack Free and Cure Times*
Specification	3M Product	Specific Gravity	Class B‑1/4 (Tack Free/ Cure)	Class B‑1/2 (Tack Free/ Cure)	Class B‑1 (Tack Free/ Cure)	Class B‑2 (Tack Free/ Cure)	Class B‑4 (Tack Free/ Cure)	Class B‑6 (Tack Free/ Cure)	TDS
AMS-S-8802 Fuel Tank and Fuselage	AC-350	1.4		(2‑3h/ 2‑3h)		(7‑8h/ 7‑8h)	(32‑36h/ 32‑36h)
AMS3276 High Temp Fuel Tank and Fuselage	AC-350	1.4	(1‑2h/ 1‑2h)	(2‑3h/ 2‑3h)		(7‑8h/ 7‑8h)	(32‑36h/ 32‑36h)	(48h/ 48h)
AMS3281 Light Weight Fuel Tank and Fuselage	AC-370 (Type 1)	1.3		(6‑7h/ 6‑7h)		(7‑8h/ 8‑10h)
	AC-370 (Type 2)	1.1		(5h/ 5h)		(8‑10h/ 8‑10h)
AMS3265 Non-Chromated Corrosion Inhibitive	AC-730	1.5		(4h/ 6h)		(16h/ 24h)
MIL-PRF-81733 Non-Chromated Corrosion Inhibitive	AC-735	1.1		(5h/ 5h)		(10‑12h/ 10‑12h)
3M Standard Window & Canopy	AC-251 Black	1.6		(4h/ 4h)	(5h/ 7h)	(8h/ 9h)
*Measured at Standard Conditions (77°F / 25°C and 50% Relative humidity). These products were manufactured under a 3M Quality Management System registered to the AS9100 standard.