The Graco 104765 Plug, Pipe, Headless 1/8-27 is a compact OEM pipe plug designed to securely seal unused or service ports in Graco spray and fluid systems.
Thread Size: 1/8-27 NPT
Design: Headless for a clean, flush installation
Use: Prevents leaks and maintains system integrity
Graco proportioner modules and fluid-handling units with sealed ports
Graco high-pressure spray rigs requiring unused port closure
Graco mobile and stationary finishing systems with maintenance access ports
Graco equipment cabinets and manifolds needing OEM sealing plugs
Product Description
The Graco 104765 Plug, Pipe, Headless 1/8-27 is a compact, headless pipe plug designed to securely seal unused or service ports in Graco fluid-handling and spray equipment. With a #1/8-27 thread specification and headless design, it allows for a flush installation without protruding hardware, maintaining system integrity and reducing snag hazards.
Key Features
Headless plug design: Sits flush with the port, reducing interference and exposure.
#1/8-27 pipe thread: Matches standard port size for many Graco assemblies.
Durable construction: Suitable for high-pressure fluid systems and industrial use.
OEM-specified part: Ensures compatibility with Graco systems and service routines.
Service-friendly installation: Simple thread-in plug to close off maintenance or unused ports easily.
Technical Specifications
Specification
Details
Part Number
104765
Thread Size
1/8-27 NPT (pipe thread)
Head Style
Headless / flush
Material
Industrial alloy or equivalent (as specified by OEM)
Use Case
Sealing of unused or service ports in Graco spray/fluid equipment
Applications
This plug is used to effectively close off unused ports in Graco proportioning systems, spray rigs, fluid-handling manifolds and high-pressure pump assemblies. Its flush, headless design ensures minimal protrusion and aids in maintaining the clean layout of the equipment while preserving system integrity and preventing leaks.
Performance Advantages
Provides leak-tight port closure without bulky hardware.
Maintains flush surfaces to reduce risk of damage or snags in mobile rigs.
Helps preserve system cleanliness and integrity by sealing unused openings.
Supports extended equipment life by preventing fluid bypass or contamination ingress.
OEM part ensures correct fit, material, and service compatibility.
Maintenance Tips
During service or inspection, verify the port threads are clean and undamaged, insert the 104765 plug and hand-thread into the port until snug, then apply appropriate sealing compound or tape if required by the system. Avoid over-torquing to prevent thread damage. Periodically inspect the plug for signs of leakage or distortion and replace immediately if any defect is found to maintain safe, reliable system operation.
Frequently Asked Questions
“Headless” means the plug has no protruding head; it threads flush with the port surface, ensuring a clean installation and minimal space usage.
No — it must match the thread size and specification of the port (1/8-27 in this case). Using incorrect thread size may lead to leaks or damage to the equipment.
After installation, verify no fluid or air is escaping the port under pressure, ensure the plug remains flush and undisturbed, and check periodically for any seepage or loosening.
While the thread size is standard, OEM parts are optimized for fit and material specifics in Graco systems. Using non-standard or generic plugs may affect system integrity, performance or warranty.
