108120 Hex Plug- Small

108120 Hex Plug- Small

This is a #2 size SAE O-Ring Boss (ORB) plug, designed to seal unused 5/16"-24 threaded ports in hydraulic systems on concrete mixers and other heavy equipment. Featuring an internal hex (Allen) socket for installation in tight spaces and an integrated O-ring for a positive, leak-proof seal, this plug is essential for maintenance and modification of hydraulic circuits. It is a common replacement part needed to cap off unused connections on hydraulic manifolds, valves, or pumps.

Key Features

• Internal hex socket drive for easy installation
• SAE O-Ring Boss (ORB) design for a reliable, high-pressure seal
• Size #2 (-02) with 5/16"-24 UNF threads
• Made of steel for durability in hydraulic applications
• Includes a Buna-N O-ring for sealing against hydraulic fluids

Fits These Mixers

McNeilus, Terex, Con-Tech. This is a universal fitting for any SAE #2 (5/16"-24) O-Ring Boss port. It is commonly used on hydraulic systems for various concrete mixer brands, including Con-Tech, McNeilus, and Terex, to plug unused ports on valves and manifolds.

All measurements ± standard manufacturing tolerance.

Product descriptions are drafted with automated tools and reviewed as time allows. While we work to keep them accurate, specifications and fitment should be confirmed with a Customer Service specialist at 800-745-3414 before purchase. Found an error? Let us know and we’ll fix it.