M25988-1-218 - O-Ring

Part number M25988/1-218 is an aerospace-grade fluorosilicone rubber O-ring seal designed for aircraft fuel, lubrication, and hydraulic system sealing applications where excellent low-temperature flexibility and fuel resistance are required. This O-ring is manufactured to military specification standards for use in demanding aerospace environments requiring reliable elastomeric sealing performance.

The seal is produced in accordance with MIL-R-25988 requirements using F70 fluorosilicone compound, offering superior resistance to aviation fuels, synthetic lubricants, ozone, and environmental exposure while maintaining flexibility across a wide operating temperature range.

Markings / Packaging Information

• Part Number: M25988/1-218
• Type: Fluorosilicone O-ring seal
• Specification: MIL-R-25988
• Compound: F70
• Manufacturer: DSC Freudenberg
• Manufacturer CAGE: ZECF3
• Supplier: Eriks Aerospace, Inc.
• Quantity: 1 each
• Cure Date: 3Q01
• Date Packaged: 11/01
• Shelf Life: 99 years

Features

• Aerospace-grade fluorosilicone elastomer construction
• Excellent resistance to aviation fuels and synthetic lubricants
• Superior low-temperature flexibility and sealing performance
• Resistant to ozone, weathering, and environmental degradation
• Suitable for aircraft fuel, lubrication, and hydraulic sealing applications
• Military specification compliant for aerospace service use