Parker 1720515 Female O-ring Boss Nipple 4000 Psi 1/2 in

Product Description

The PARKER 1720515 is a straight female O-Ring Boss (ORB) nipple designed for high-pressure hydraulic hose assemblies. Built from steel with a threaded connection, it accepts 1/2-inch hose and uses a 3/4-16 thread size. Rated to 4,000 psi maximum working pressure, this fitting meets ISO 7241-1 Series A standards and is sized for a maximum flow rate of 12.00 GPM. It is a compact, single-piece component — 2.08 inches in overall length and weighing 0.234 pounds — intended for licensed hydraulic technicians and fleet maintenance professionals assembling or repairing pressure-critical hose runs.

The 1720515 is well suited to mobile hydraulic systems where vibration, pressure cycling, and tight routing are common challenges. Parker lists specific applications including snow plows, truck trailer connections, and general mobile equipment hydraulic circuits. The straight body profile simplifies routing in confined spaces. At 4,000 psi, it handles the working pressures typical of most mobile hydraulic circuits without derating. Hydraulic hose fabricators and heavy-equipment technicians working in shop or field environments will find it a standard-format replacement or new-assembly component.

Key Features

• 4,000 psi maximum working pressure rating for high-demand mobile hydraulic circuits
• Female O-Ring Boss connection type provides a reliable, leak-resistant seal under pressure cycling
• 3/4-16 thread size conforms to SAE shaft type specifications
• 1/2-inch hose size with 12.00 GPM maximum flow rate
• Straight body shape — 2.08 inches overall length — for direct, low-profile hose terminations
• Meets ISO 7241-1 Series A standards; Parker Series 6600

Compatibility

Designed for use with mobile applications including snow plows and truck trailer hydraulic connections, as specified by the manufacturer. Compatible with 1/2-inch hydraulic hose assemblies requiring a 3/4-16 female O-Ring Boss threaded fitting.

Installation Notes

Installation should be performed by a qualified hydraulic technician. Depressurize and bleed all hydraulic circuits completely before disconnecting or assembling any fittings. Inspect the O-ring seat for debris or damage prior to assembly, as contamination at the sealing surface is a primary source of leaks. Follow the equipment manufacturer's torque guidelines and applicable SAE or ISO standards for ORB fitting assembly — do not rely on feel alone to confirm a leak-free seal.