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 8130-3 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 shelf storage life of 20 quarters (5 years).
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. Use
cure date on package as start date.
6. Store fuel cell (bladder) at temperatures above 45º F and below 75º F.
Page 20.24 Chapter 20 Standard Practices MAY 2015
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