The Parker Stratoflex 300-3S is a straight reusable (field attachable) 37° flare hose fitting designed for use with compatible Stratoflex 111 Series hose assemblies. Manufactured to meet demanding aerospace standards, this fitting provides a secure, leak-resistant connection for aircraft fluid transfer systems while allowing hose assemblies to be fabricated or serviced without the need for permanent crimping equipment.

Designed for -3 (0.188-inch I.D.) hose, the 300-3S features a precision-machined 3/8-24 threaded connection and a 37° flare sealing surface. This proven metal-to-metal sealing design delivers dependable performance in hydraulic, fuel, lubrication, and pneumatic systems where pressure integrity and vibration resistance are essential for safe aircraft operation.

The "S" designation indicates a carbon steel construction, offering excellent mechanical strength and durability for demanding operating environments. Its reusable design enables qualified maintenance technicians to efficiently assemble, repair, or replace hose ends during scheduled maintenance or field service, helping reduce aircraft downtime while maintaining OEM-quality performance.

Precision manufacturing ensures proper fit, reliable sealing, and long service life when installed in accordance with approved maintenance procedures and used with compatible Stratoflex hose assemblies.

Key Features

- Part Number: 300-3S
- Manufacturer: Parker Stratoflex
- Component: Straight Field Attachable 37° Flare Hose Fitting
- Hose Size: -3 (0.188 in. I.D.)
- Thread Size: 3/8-24
- Connection Type: 37° Flare
- Material: Carbon Steel
- Compatible Hose: Stratoflex 111 Series
- Application: Aircraft hydraulic, fuel, oil, lubrication, and pneumatic systems
- Feature: Reusable field attachable design for OEM maintenance and hose assembly