A bird's eye view of the SIGMA Surplus building.

Why SIGMA Surplus?

A comprehensive approach to buying and selling surplus parts

Here at SIGMA Surplus, we’re redefining the word “surplus.” We strive to save you time and money, whether you’re looking for a specific part or needing to clear out space on your production floor and earn some extra value from idle assets. We pride ourselves on fast turnaround times to help you meet your goals as quickly as possible.

Through years of building relationships with businesses across the globe, we’re able to offer a marketplace of goods sourced from and purchased by people just like you.

We’re changing the game of what surplus can be. Each and every single part that passes through our inventory has been sourced from reliable business partners, cleaned, hand-inspected (and tested, where applicable), thoroughly researched, and properly stored before it’s securely packed and shipped to you.


Quality surplus parts

You want to be confident that you’re buying the right product for your operation, and that’s where we come in. When your production line is down and you need a specific part, we know how important it is to receive a replacement you can trust.

Whether you need a central processing unit or a simple switch, it’s mission-critical that your replacement parts get the job done. Every minute of production downtime can equal lost revenue. SIGMA Surplus employs a meticulous product inventory and inspection process, with each item given the proper care and attention it deserves.

As soon as parts arrive in our processing area, trained technicians take the time to individually inspect, clean, and log each item before it’s added to our inventory. SIGMA Surplus maintains a database that catalogs more than 120,000 parts, each with its own unique entry. Search our extensive inventory here.

Our inventory process begins with logging the product’s complete SKU and model information. From there, specialists research the item, compiling a detailed description with technical specifications and other relevant information. They also take detailed photographs of each product, capturing every angle so our customers know exactly what they’re getting.

After inspection, each product that can be tested is powered up in our own facility to ensure it functions properly. 


Surplus delivered fast and safe across the globe

It doesn’t matter how reliable our products are if you don’t receive them on time or if they’re damaged in transit. That’s why SIGMA Surplus offers same-day shipping on orders placed before 2:00 p.m. CST, in addition to overnight and international delivery options. If you’re in the Evansville area, we can also offer same-day delivery via our courier service.

Every SIGMA Surplus order is hand-picked and hand-packed, and we take great care in securing each product so it arrives safely at your door. Simply put, we do it fast and we do it right.


We stand by our products

Even after you receive your order, SIGMA Surplus is there for you. Relationships with customers don’t end just because your product has been delivered. We back up every single order with a standard 30-day warranty. Products that have been powered up and tested fall under a two-year warranty free of charge.

We believe in full transparency and open communication with our customers. Our service team is ready to take your call and answer any questions you may have.

Ready to get started? Fill out our contact form today and see how SIGMA Surplus can help.

To learn more about how SIGMA Surplus takes care of our customers, check out the case study below.

View Case Study


Discover the full SIGMA Group family

Did you know there’s more to SIGMA than our Surplus division? The SIGMA Group, made up of multiple dedicated brands, is a leading equipment and service provider in the packaging and processing industries. SIGMA offers a one-stop-shop for all your business needs, from spare parts to manufacturing equipment, auctions, asset management, appraisal, electronics recycling, and so much more.

Discover the entire SIGMA family and learn more about how we can help you meet your goals.


SIGMA Equipment serves manufacturing businesses through the buying, selling, and renting of used packaging, processing, and facility and material handling equipment for a variety of industries.

SIGMA Recovery is an asset management program and customized software dedicated to assisting companies in the redeployment, reconditioning, reselling, and recycling of their idle equipment and assets.

SIGMA Auction connects sellers and buyers of packaging and processing equipment to help them either earn money for their surplus equipment or provide competitive prices for used equipment. 

SIGMA Appraisal’s accredited appraisers help customers learn the value of their assets by offering a variety of valuations and appraisals for their equipment.

SIGMA Integration specializes in integrating new and pre-owned equipment into turnkey processing and packaging lines. With a vast in-house equipment inventory, the Integration team eliminates long lead times and financial constraints.

C&I Electronics is a certified electronics recycling facility that offers a secure and efficient way to dispose of devices from households and large corporations.