M25988/1-037 Packing is a military specification fluorosilicone O-ring designed to provide reliable sealing in demanding aerospace applications. Manufactured in accordance with MIL-DTL-25988 requirements, this packing is engineered to maintain a dependable seal while exposed to aviation fuels, lubricating oils, hydraulic fluids, and a wide range of operating temperatures.

Fluorosilicone material offers excellent resistance to fuel and petroleum-based fluids while maintaining flexibility under both low and elevated temperature conditions. These characteristics make the seal suitable for use in aircraft fuel, lubrication, hydraulic, and accessory systems where leakage prevention and long-term durability are critical.

The M25988/1-037 packing is intended for installation in compatible static and limited dynamic sealing applications. During scheduled maintenance, O-rings should be inspected for signs of wear, hardening, cuts, deformation, or chemical deterioration and replaced whenever necessary to ensure continued system integrity and reliable operation.

This listing includes a pack of 25 pieces, making it well suited for maintenance facilities, repair stations, and operators performing routine aircraft servicing or component overhauls.

Key Features

- Part Number: M25988/1-037
- Manufacturer: Military Specification / Qualified Manufacturer
- Component: Fluorosilicone Packing (O-Ring)
- Pack Quantity: 25 Pieces
- Manufactured to MIL-DTL-25988 specification
- Fluorosilicone (FVMQ) construction
- Excellent resistance to aviation fuels, oils, and hydraulic fluids
- Suitable for aircraft fuel, lubrication, hydraulic, and accessory system sealing applications