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HAM-LET LETLOK Double-Ferrule Stainless Steel Compression Fitting Plug, 4 mm OD - Double-Ferrule Stainless Steel Fittings
HAM-LETDouble-Ferrule Stainless Steel Fittings

HAM-LET LETLOK Double-Ferrule Stainless Steel Compression Fitting Plug, 4 mm OD

The HAM-LET Compression Fitting Plug (MPN 7121L-SS-4MM) is a double-ferrule stainless steel fitting for 4 mm OD tubing, part of the LETLOK series. It is compatible with Let-Lok fitting brands, providing a reliable…

SKU 3G-OTH-471304

Also listed as: 7121LSS4MM · 7121L SS 4MM

Brand
HAM-LET
Item
LETLOK Double-Ferrule Stainless Steel Compression Fitting Plug, 4 mm OD
Category
Double-Ferrule Stainless Steel Fittings
Available to Order
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

HAM-LET
Manufacturer Part Number
7121L-SS-4MM
Series
LETLOK
Type
Compression, Stainless Steel
Compatible Fitting Brands
Let-Lok

Technical Documents

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HAM-LET Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HAM-LET Compression Fitting Plug (MPN 7121L-SS-4MM) is a double-ferrule stainless steel fitting for 4 mm OD tubing, part of the LETLOK series. It is compatible with Let-Lok fitting brands, providing a reliable seal in industrial fluid systems.

Frequently Asked Questions

What is a HAM-LET compression fitting plug used for?

A HAM-LET compression fitting plug seals the end of a 4 mm OD tube in industrial fluid systems. It is part of the LETLOK series and uses a double-ferrule design to create a reliable, leak-tight connection in applications such as instrumentation, chemical processing, and hydraulic lines.

What are the specifications of the HAM-LET 7121L-SS-4MM plug?

The HAM-LET 7121L-SS-4MM plug is a double-ferrule stainless steel compression fitting for 4 mm OD tubing. It belongs to the LETLOK series and is compatible with Let-Lok fitting brands. The manufacturer part number is 7121L-SS-4MM, and it is made from stainless steel for corrosion resistance.

Where to buy HAM-LET compression fittings worldwide?

3G Electric supplies HAM-LET compression fittings, including the 7121L-SS-4MM plug, to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this and other industrial components across 14 departments.

How to install a HAM-LET double-ferrule compression fitting?

To install a HAM-LET double-ferrule compression fitting, cut tubing squarely, deburr the end, and slide the nut and ferrules onto the tube. Insert the tube into the fitting body until it bottoms out, then tighten the nut to the manufacturer's recommended torque. Always follow generic best practices for leak testing.

Used in

Common applications for HAM-LET
Oil and gas — HAM-LET H99 Series needle valves for instrument isolation in high-pressure lines
Chemical processing — HAM-LET H-400 Series check valves for backflow prevention in corrosive fluid systems
Semiconductor manufacturing — HAM-LET EVZS4R-BV diaphragm valves for ultra-high-purity gas distribution
Power generation — HAM-LET H-6800 Series three-way ball valves for cooling water flow switching
Analytical instrumentation — HAM-LET H300U Series metering valves for precise flow regulation in lab gas systems
Hydraulic systems — HAM-LET H-410 Series poppet check valves for load-holding in hydraulic circuits

HAM-LET Products

3G Electric supplies HAM-LET double-ferrule stainless steel fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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