TRICO Color Coded Grease Zerk Caps: 1/4"-28 Thread Size, Green
The TRICO Color Coded Grease Zerk Cap (MPN 37021) is a plastic dust cap for grease fittings with a 1/4"-28 thread size, supplied in green. This cap protects fittings from contamination, supporting maintenance across…
SKU 3G-OTH-593021
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Product Description
The TRICO Color Coded Grease Zerk Cap (MPN 37021) is a plastic dust cap for grease fittings with a 1/4"-28 thread size, supplied in green. This cap protects fittings from contamination, supporting maintenance across 14 industrial departments — and we supply far more than is listed. Our specialist depth in combustion, pumps and controls, as an authorised distributor for brands like FBR, Interpump, Riello, Beckett, Schneider, ABB, Siemens, SKF, Festo, and Fluke, ensures we interpret your demand and deliver the right solution.
Frequently Asked Questions
What is the TRICO Color Coded Grease Zerk Cap used for?
The TRICO Color Coded Grease Zerk Cap (MPN 37021) is a plastic dust cap that protects grease fittings from dirt, debris, and contamination. It is used across industrial maintenance applications to extend equipment life and ensure reliable lubrication in machinery, conveyors, and pumps.
What are the specifications of the TRICO 37021 grease zerk cap?
The TRICO 37021 grease zerk cap has a 1/4"-28 thread size, is made of green plastic, and is designed as a dust cap for grease fittings. It is manufactured by TRICO under part number 37021 and is suitable for protecting fittings in demanding industrial environments.
Where to buy TRICO grease zerk caps worldwide?
3G Electric supplies TRICO grease zerk caps worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine TRICO parts like the 37021 cap to support maintenance across 14 industrial departments, including pumps and controls.
How to install a TRICO grease zerk cap?
To install a TRICO grease zerk cap, simply thread it onto the 1/4"-28 grease fitting by hand until snug. Avoid overtightening to prevent damage to the plastic cap. Regular cleaning of the fitting before installation helps maintain a contamination-free seal and extends equipment life.
Used in
Common applications for TRICOTRICO Products
3G Electric supplies TRICO dust caps for grease fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









