LockNLube LNL166 Black Grease Gun Barrel Cap

Keep your grease gun clean and drip-free between jobs with the LockNLube LNL166 Barrel Cap. Manufactured from durable nitrile rubber, this cap slips over the nose of any standard 14 oz grease gun—manual, cordless, or pneumatic—to seal in residual grease and stop leaks during transport or storage. A beveled internal lip grips the gun barrel securely so the cap won’t shake loose on service trucks, shop carts, or equipment cabs. The snug seal helps prevent dirt and dust from contaminating the coupler area, which means fewer messy wipe-downs and a cleaner connection when you’re ready to grease again.

The LNL166 is finished in black and is part of a color-coded range, making it easy to assign different colors to different greases and avoid cross-contamination across the fleet. It’s a simple, low-cost upgrade that saves cleanup time, protects work surfaces, and keeps a grease gun ready for fast, clean use on the next PM round—whether you run a pistol-grip, lever, or cordless model.

LockNLube Black Grease Gun Barrel Cap At a Glance

• Stops drips and leaks: Nitrile rubber seal keeps grease contained in storage and transport.
• Secure hold: Beveled inner lip locks onto the barrel to resist vibration.
• Universal fit: Compatible with standard 14 oz grease guns—manual, cordless, and pneumatic.
• Cleaner workflow: Helps keep couplers, drawers, and truck beds free of stray grease.
• Contamination control: Covers the barrel to keep dust and debris away from the outlet.
• Color coding ready: Use different colors across guns to identify grease types.
• Quick on/off: Flexible material installs and removes in seconds.

Markets

• Fleet & Truck Maintenance Keeps service trucks and PM carts clean between stops.
• Construction & Heavy Equipment Controls leaks in cabs, job boxes, and site trailers.
• Agriculture Prevents dirt intrusion while traveling between fields and barns.
• Industrial & Manufacturing Reduces shop cleanup around lubrication stations.
• Municipal & Public Works Standardizes storage practices across mixed fleets.
• Trade Schools & Training Demonstrates best practices for tool care and contamination control.

Technicians in these settings rely on a grease gun all day, and small leaks add up to wasted time and cleanup. The LNL166 barrel cap creates a positive seal on the outlet of a 14 oz grease gun, so residual pressure and warm temperatures don’t leave spots on seats, shelves, or drawers. The beveled lip keeps the cap in place on rough roads, while the nitrile rubber resists petroleum oils and common shop chemicals. When paired with color coding, crews can spot the right gun for each application and reduce the chance of mixing incompatible lubricants. It’s an inexpensive way to protect tools, control contamination, and keep the workflow moving.

LockNLube LNL166 Black Grease Gun Barrel Cap Features

• Nitrile Rubber Construction: Oil-resistant material stands up to daily shop use.
• Beveled Retention Lip: Helps the cap stay locked on the barrel in high-vibration environments.
• Universal Compatibility: Fits standard 14 oz grease guns (manual, cordless, pneumatic).
• Color Coding Option: Available in multiple colors to differentiate grease types.
• Easy Maintenance: Wipes clean; flexible for quick install and removal.

LockNLube LNL166 Black Grease Gun Barrel Cap Includes

• (1) LNL166 Black Grease Gun Barrel Cap

LockNLube LNL166 Black Grease Gun Barrel Cap Specifications

• Model: LNL166
• Product Type: Grease gun barrel cap
• Color: Black
• Material: Nitrile rubber
• Compatibility: Standard 14 oz (400 g) grease guns—manual, cordless, pneumatic
• Retention: Beveled inner lip for secure fit

Why Professionals Choose the LockNLube Black Grease Gun Barrel Cap

Crews choose the LNL166 because a grease gun barrel cap keeps a 14 oz grease gun from dripping in trucks, drawers, and equipment cabs. The nitrile rubber seal fits tightly over the barrel and the beveled lip holds under vibration, so there’s less cleanup and fewer rags wasted. Color options make it easy to assign a cap to each lubricant—handy when switching between chassis grease and food-grade or specialty products. By keeping dirt off the coupler end and preventing leaks, technicians get a cleaner start on every job and avoid cross-contamination that can lead to premature wear. For teams looking for a simple, effective way to store a pistol-grip or lever grease gun, the LNL166 delivers clean results at a low cost.