What are the opening hours?

Monday 8am - 5pm Tuesday 8am - 5pm Wednesday 8am - 5pm Thursday 8am - 5pm Friday 8am - 5pm Saturday 8am - 5pm Sunday 8am - 5pm

Rothkopf, 555 Spirit of Saint Louis Boulevard, Chesterfield, MO (2026)

Name: Rothkopf
Address: 555 Spirit of Saint Louis Boulevard, Chesterfield, MO, 63005, US
Telephone: +16364492366

We provide components like; o-rings, gaskets, seals, and custom parts, to manufacturers producing consumer products. Located in Chesterfield, MO, this rubber supplier offers high-quality precision molded products and O-Rings to clients around the country and globe. Rothkopf has been a leading rubber supplier since 1956. Louis, MO, under the name R.F. Carlson Company. In 1984, after John Rothkopf p

urchased the business, they rebranded to form Rothkopf & Associates Inc. Rothkopf offers standard, metric, and custom O-rings available for bulk purchase. Their O-rings are manufactured with a wide array of compounds, including urethan, silicone, teflon, or a custom formula. As a quality-focused rubber supplier they also comply with standards set by Mil-Aero, NSF, and the FDA. No matter what you need, you can trust them to build the right product for you. Not looking for O-rings? They can also supply other rubber products, including:

* Seals

* Lathe cuts

* Quad rings

* U-cups

Just like their O-rings, all rubber products can be custom-made based on your needs. Get rubber products made to your exact specifications when you work with Rothkopf. All standard and custom-made products can be shipped anywhere in the United States and around the world. Call (636) 449-2376 today to place your order. You can also visit them online to learn more about their customization process.

08/24/2026

Manufacturing keeps moving—and the smallest components can have a big impact on keeping it that way.

At ROTHKOPF, we know that sourcing rubber components isn’t just about finding a part. It’s about finding the right material, the right solution, and a supplier you can count on when quality, availability, and timing matter.

From O-rings, seals and gaskets to hoses, grommets and custom molded components, we help engineers and purchasing professionals simplify sourcing and strengthen their supply chains.

Whether you're working on a new application, looking for an alternate source, or trying to solve an existing supply challenge, our team is ready to help.

⚙️ Engineering a new product?
📦 Looking to strengthen your supplier base?
🔍 Having trouble sourcing a particular rubber component?

Let’s talk. Put ROTHKOPF’s experience, resources, and supplier network to work for you.

👉 Contact us today at ROTHKOPF.com and let’s see how we can help.

07/08/2026

Q3 is upon us. Is your supply chain ready?

As production ramps up for the second half of the year, having the right supplier can make all the difference.

At ROTHKOPF, we help OEMs keep projects moving with:
✔ Reliable O-rings and sealing solutions
✔ Precision rubber components and assemblies
✔ Engineering knowledge you can count on
✔ Responsive service and dependable delivery

What's your biggest supply chain priority heading into Q3?
Lead times? Quality? Cost? Engineering support? Let us know in the comments—or send us a message. We'd love to learn more about your challenges and discuss how we can help.

Let's make Q3 your strongest quarter yet.

05/13/2026

Trade show season is here, and the Rothkopf team has been out and about meeting customers, connecting with new people, and spending time with some incredible exhibitors along the way!

We recently attended the D2P Show in Schaumburg, Illinois, and it was a great show with an awesome turnout. We truly appreciate everyone who stopped by our booth to chat and learn more about what we do.

Events like these are a great reminder of how valuable face-to-face conversations are and how strong the manufacturing community continues to be.

Thanks again to everyone who made the show such a success — we’re already looking forward to the next one! 👏

04/24/2026

OEMs shouldn’t have to become experts in rubber materials and components just to get the right parts they need— that’s where we come in.

At Rothkopf, our team has decades of hands-on expertise and a trusted global network of manufacturing resources. We don’t just supply components — we strengthen your entire supply chain.

Think of us as an extension of your team, delivering reliability, quality, and efficiency where it matters most.

Have a question about a part? Having issues finding a part? Visit our website or give us call.
🌐 rothkopf.com
📞 636-449-2366

Address

555 Spirit Of Saint Louis Boulevard
Chesterfield, MO
63005

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	8am - 5pm
Saturday	8am - 5pm
Sunday	8am - 5pm

Telephone

+16364492366

Website

https://www.rothkopf.com/

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