Brass 1″ Threaded Filler Cap and Chain

Overview

The Brass 1″ Threaded Filler Cap with Chain is a durable, corrosion-resistant fitting designed to seal and protect threaded openings on industrial tanks, reservoirs, fuel systems, and mechanical equipment. This generic brass cap features an integral safety chain to prevent loss or misplacement during routine maintenance and fluid checks. Manufactured from high-quality brass for superior corrosion resistance, the cap accommodates 1-inch threaded male connections and is suitable for use with water, oil, fuel, and air lines in low- to medium-pressure applications.

Key Features

• Solid brass construction provides excellent corrosion and rust resistance
• Integral chain prevents loss during tank inspection and maintenance
• 1-inch female threaded connection for secure fit on standard male ports
• Suitable for water, oil, fuel, hydraulic, and air systems
• Compact, lightweight design for easy installation and removal
• Generic OEM-style replacement fitting

Technical Specifications

Typical Applications

• Fuel tank filler ports on vehicles and equipment
• Hydraulic reservoir fill caps and breathers
• Oil tank and heating system fill ports
• Industrial fluid storage tank closures
• Machinery and engine inspection/fill points
• Water system tank protection and sealing

Compatibility & Replacements

Compatible With

• Standard 1″ NPT (National Pipe Thread) male connections
• Fuel tanks, hydraulic reservoirs, and oil systems
• Industrial pressure vessels and equipment tanks
• Low to medium pressure piping systems

Replaces / Drop-In Replacement For

This is a generic brass filler cap suitable for replacement of similar OEM brass filler caps with 1-inch female NPT threading. Verify compatibility with your specific tank or equipment fitting before ordering.

Works With

• 1″ NPT male pipe threads
• Brass, copper, and iron piping
• Low- to medium-pressure industrial systems
• Aboveground tank and reservoir applications