An ASTM F88 Seal Strength is used to assess the peel strength of flexible barrier materials utilized in medical packaging systems. The ASTM F88 standard provides two measurements: Average Seal Strength: The average force required to separate a flexible material from a rigid one, or two flexible materials from each other. Maximum Seal Strength: The maximum amount of force required to separate a flexible material from a rigid one, or two flexible materials from each other.