Hoqqf JIC Hydraulic Cap and Plug Kit 72-Piece Zinc-Plated Carbon Steel — Assorted Sizes in Compartment Case

Hoqqf 72 PCS JIC Hydraulic Cap and Plug Kit provides a full set of zinc-plated carbon-steel JIC 37° caps and plugs to protect, seal, and transport hydraulic fittings safely.

This comprehensive kit supplies 72 SAE-standard JIC caps and plugs in multiple sizes, organized for easy access during maintenance, repairs, or field service. Each piece is CNC-formed from carbon steel and zinc-plated to resist corrosion while delivering accurate thread engagement. The assortment covers common JIC sizes so you can plug test points, seal hose ends, and prevent contamination while systems are offline or in transit.

Which sizes are included and how is the kit organized?

The kit includes 72 pieces across a practical range of JIC thread sizes to fit many hydraulic systems and adapters. Sizes are allocated to match common maintenance needs and come packed in a compartmented tray for fast selection. This saves time when you need the correct cap or plug on the workbench or at a service van.

• 72 SAE-standard pieces total: 04 (12 pcs), 06 (10 pcs), 08 (6 pcs), 10 (4 pcs), 12 (2 pcs), 16 (2 pcs)
• Compartmented carrying case keeps sizes separated and visible
• Clear labeling or molded slots assist quick identification

How durable and corrosion-resistant are these JIC caps and plugs?

Each cap and plug is made from carbon steel and treated with a zinc plating to slow oxidation in humid or oily environments. The metal construction resists deformation under routine handling, while the coating provides an extra barrier against rust and surface wear. These parts are intended for demanding industrial and mobile use, not for permanent submerged service.

• Carbon-steel body for strength under torque and repeated use
• Zinc plating reduces surface corrosion and extends service life
• Precision-formed threads to avoid cross-threading and ensure tight seals

In what situations will these caps and plugs be most useful?

Use this Hoqqf kit whenever you need to protect hydraulic ports, block off test points, or keep contaminants out during maintenance and transport. They are suitable for workshops, field repairs on agricultural or construction machinery, diagnostic setups, and temporary sealing during shipping. The caps help reduce fluid loss and prevent dirt or moisture entry into sensitive hydraulic circuits.

• Service and repair on hydraulic hoses, valves, and cylinders
• Protection during equipment transportation or storage
• Diagnostic and test-point sealing in fluid-power systems

Will these plugs fit my equipment and how do I ensure compatibility?

The kit follows SAE/JIC sizing conventions for 37° flare connections commonly used across many hydraulic brands and adapters. To confirm fit, match the thread size marking on your fitting to the corresponding kit piece before installation. For non-standard fittings, verify dimensions or contact the equipment manufacturer to avoid mismatches.

• Designed for standard JIC 37° SAE thread sizes used industry-wide
• Check existing fitting size stamping or measure thread diameter and pitch
• Not intended for permanent pressure containment without proper sealing hardware

Who this is for: Technicians, fleet mechanics, hydraulic system installers, and maintenance crews who need a reliable, organized assortment of JIC caps and plugs for on-the-job sealing and protection. If you service tractors, trucks, construction machinery, test benches, or any equipment using JIC 37° fittings, this Hoqqf kit provides durable, ready-to-use covers to simplify preventive maintenance and emergency repairs.