20-80 Storage Limits
1. B283 hoses have a shelf storage life of 5 years. Hose service life is “on condition”,
with a maximum of 12 years or 2000 hours, whichever occurs first.
2. Elastic cords have a shelf storage life of 5 years. Elastic cord service life is “on
condition”, with a maximum of 12 years. Use invoice or FAA Form 8130 date as start
date.
3. Store V-belts at less than 85º F (30º C), with relative humidity below 70%. Avoid
solvent and oil vapors, atmospheric contaminants, sunlight, and ozone sources (electric
motors, arc welding, ionizing air purifiers, etc.). Belt shelf life is 4 years if preceding
recommendations are followed. Use invoice date or FAA Form 8130-3 date as start
date.
4. Oils and greases have a 5 year shelf life when stored and kept sealed in their original
container. Use invoice date or FAA Form 8130 date as start date unless the manufacturer
has marked container with manufacture date (in which case use manufacture date as
start date).
5. Rubber o-rings, seals, and gaskets have a (20) quarter, five (5) year shelf life from the
indicated cure date. Flourocarbon (Viton) and silicon rubber products shall adhere to
manufacturer’s expiration date(s). Service life is “on condition” with a maximum of
12 years.
6. Store uninstalled fuel bladder in original container (if available) at 70°F to 80°F and
below 70% humidity. Coat bladder with clean, non-detergent engine mineral oil to
prevent rubber from drying out and cracking. Store bladder in relaxed condition free
from tension, compression, or other deformation such as creases or folds.
Page 20.24 Chapter 20 Standard Practices JUL 2020
To Next Page
