3M Aerospace AC-215 Class B Access Door Aerospace Sealant
Create a strong seal with 3M™ Aerospace Sealant AC-215 Class B access door aerospace sealant from SkyGeek. This polysulfide access door sealant is low-shrinkage and low-odor. Itís specially designed for faying surfaces in which easy separation of joined surfaces is critical. Apply the low-sag, red paste with a spatula, putty knife or caulking gun. Once the sealant has cured, it forms a low-adhesion, tough and rubbery gasket. It also molds well to surface irregularities.
Approvals, References and Specifications
Use InstructionsTwo-Part Sealant Cartridges:
The shelf life of AC-215 Class B is 12 months from date of packaging, when stored at temperatures below 80 degrees F in its original container.
Mixed AC-215 Class B may be stored under refrigeration as follows: 15 days at -10 degrees F, 30 days at -40 degrees F.
It is important to remember that freezing, storing and thawing procedures reduce application life. Also, frozen storage will reduce application life by varying amounts depending on the storage temperature and length of storage time. All aspects of storage, freezing and thawing should be planned carefully and it is not recommended to mix and freeze with less than half an hour application time.
Health and Safety Precautions
AC-215 Class B sealant is safe to use and apply when recommended precautions are followed. Before using this product, read and understand the Material Safety Data Sheet (MSDS), which provides information on health, physical and environmental hazards, handling precautions and first aid recommendations. An MSDS is available on request. Avoid overexposure. Obtain medical care in case of extreme overexposure.
SpecificationsMIL-S-8784 - GSA Approved
TAPS 1163 Ty IV - Qualified
299-947-074 - Qualified (pre-mixed and frozen)
Typical Physical and Application Properties
Application Life and Cure Time
(At 75 degrees F, 50% Relative Humidity)
*Application Life refers to the length of time that mixed compound remains at a consistency suitable for application with roller or brush. Application life is always measured at a standard temperature of 75 degrees F with a relative humidity level of 50%. In general, for every 20 degrees F rise in temperature, the application life is halved; and for every 20 degree drop, it is doubled. High humidity levels during the mixing process will shorten application life.
**Tack-free Time is the length of time after which a mixed sealant will no longer tightly adhere to L-LP-690 standard low density polyethylene film.
***Cure time is defined as the length of time it takes AC-215 Class B sealant to reach 30A hardness. It depends on three factors: remaining application life, temperature and relative humidity. To a certain extent, the temperature/humidity factors for application life also apply to curing. To accelerate the curing process, apply heat up to (but not more than) 120 degrees F.
Typical Physical and Performance Properties of Cured Compound when tested per MIL-S-8784
*Not a specification requirement