Order by 3 PM CT, ships today

For engineers building next-generation medical devices.

Heat shrink, PTFE liners and marker bands in stock. Order by 3 PM Central and it ships today. Stuck on a problem? Our engineers answer, free.

600+standard sizes online, with live stock
ISO 9001certified quality system, CoC on request
Same dayshipping on stock, order by 3 PM CT
~60 mintypical engineer reply on quotes and questions
Shop by family

Standard sizes, live stock, volume pricing.

Filter by expanded ID, recovered ID and wall. Or tell the Size Finder your part OD and see what fits. Open the Size Finder

All components can be customizedCustom IDs, walls, lengths and cuts. Ask an engineer →
How it works

Three steps. Parts tomorrow.

01

Find your size

Search a part number or a dimension, filter the spec table, or enter your part OD in the Size Finder.

02

Add it to your cart

Volume pricing is shown up front. Pay by card, or send a PO for production quantities.

03

It ships today

Order in-stock parts by 3 PM Central and they leave Maple Grove, MN the same day. A CoC is included on request.

The part that does what the spec says
Scroll to apply heat
.000"inner diameter
0% recovered

Expanded.

Slides over your assembly with room to spare.

Heat applied.

It recovers evenly from one end to the other.

Recovered.

Tight, uniform and ready for your next step.

How it's made

We design the equipment that makes your parts.

Most suppliers buy standard machines. 3TG designs and builds its own equipment and processes. That's how we hold quality, keep prices fair and scale a new production line quickly when your program moves to volume.

3TG volume
4–6 wk
Typical supplier
8+ wk
Supply crunch
15–20 wk

Production lead times for high-volume orders. Stock parts ship the same day.

Ask an engineer

Stuck on a problem? A two-minute conversation usually fixes it.

Reflow bubbles, a liner that won't bond, choosing a shrink ratio. Tell us what you're building. An engineer replies, free, usually within about 60 minutes during business hours.

Ask a question
3TG
3TG Engineering
Typically replies in ~60 min

"Tell me the part OD, the jacket material and your reflow setup. We'll tell you which heat shrink to start with and what to watch for."

3TG Tech
Coming soon

New materials engineers don't have access to today.

3TG is developing proprietary components for the next generation of devices. Be first to see the specs.