Parker F37
Parker Parflange® F37 – Weld-Free Flange System for Hydraulic Lines
Precision Hydraulic Connections for High-Pressure Tube Assemblies (Up to 420 bar)
Installed by Hopespare engineers | Faster | Safer | Stronger
Parker’s Parflange® F37 system is a robust, cold-formed, non-welded tube connection system designed for high-pressure hydraulic applications. With compatibility for ISO 6162-1/2 and ISO 6164 flanges, F37 allows fast, permanent, leak-free assembly of large-diameter tubing—without the need for welding, flushing, or X-ray inspection.
At Hopespare, we offer onsite Parflange® F37 installation services, using certified Parker tooling and fully trained personnel to ensure precision and reliability in hydraulic circuits across a wide range of industrial systems.
Key Features & Benefits
- No Welding Needed
Eliminates flame permits, X-ray inspections, weld prep and post-cleaning - High Pressure Rated
For hydraulic pressures up to 420 bar using ISO 6164 and SAE 6000 flanges - Wide Tube Size Range
From 16 mm to 273 mm OD (½” to 10″) and wall thicknesses up to 9 mm - Leak-Free, Stable Sealing
Uses the specially engineered F37 Seal Carrier with Retaining Ring—ideal for fluctuating hydraulic pressures - Environmentally Friendly
No welding = no fumes, degreasers, acid cleaning, or flushing - Fully Field-Serviceable
Reassembly possible without compromising sealing integrity
Hydraulic systems often operate at high pressure and in confined spaces where welding poses safety, contamination, and scheduling risks. F37 addresses these by:
- Allowing fast installation and commissioning with minimal site downtime
- Providing repeatable, high-strength sealing with no risk of weld defects
- Offering corrosion-resistant connections (Cr(VI)-free steel and stainless options)
- Being suitable for mobile machinery, industrial plants, press lines, and recycling systems
Hopespare Onsite Installation Services
As a certified Parker distributor and installation partner, Hopespare can:
- Install Parflange® F37 systems on-site using Parker F37 flaring tools
- Provide flanged assemblies for hydraulic systems from design to deployment
- Support full testing, flushing (if needed), and torque setting
- Retrofit or replace welded systems for cleaner, faster, and compliant installations
From initial consultation to final tightening, our engineers ensure every F37 connection meets Parker’s exacting standards.
Technical Overview
| Specification | Value |
| Tube OD Range | 16 mm to 273 mm (½” to 10″) |
| Max Wall Thickness | 9 mm |
| Pressure Ratings | Up to 420 bar (SAE 6000 / ISO 6164) |
| Compatible Flange Types | SAE J518, ISO 6162-1/-2 (Code 61/62), ISO 6164 |
| Seal Options | F37 Seal, Bonded Ring, Retaining Ring System |
| Material Options | Steel (Cr(VI)-free), Stainless Steel |
| Approvals | DNV, ABS, KR, Lloyd’s Register |
Common Applications
- Hydraulic press and forming lines
- Injection moulding equipment
- Waste and recycling plants
- Industrial power units
- Tunnel boring machinery
- Offshore mobile hydraulic units
- Steel production and forging facilities
Ready to Upgrade Your Hydraulic Lines?
Hopespare offers expert installation, technical support, and genuine Parker components for all Parflange® F37 hydraulic projects.