Skip to Main Content
Create a nozzle that keeps sealants fresh
engineering product design design chemistry engineering cad chemical engineering construction industrial design
top 10
69 months ago
Small pic caulk window

Products like Caulk and Silicone are traditionally sold and dispensed in either small aluminum tubes and larger caulk tubes. Both options utilize tapered plastic nozzles to dispense the material. The issue we are facing is that once these tubes opened and used, air and moisture begin to cure the products in the nozzles making them difficult to dispense in subsequent uses.

We are looking for novel new nozzle designs or solutions to prevent the curing of silicone in nozzles and ensure that the caulk and silicone inside are kept fresh. This would involve preventing air and moisture from entering the nozzle and affecting the product.


Propose a new nozzle design for small aluminum tubes and/or larger caulk tubes that does not allow air and moisture in and keeps the product fresh between uses.

1. What is your new design for a nozzle that prevents air from curing caulk or silicone?

2. How does this design prevent spoilage?

3. (Optional) Sketches, drawings, CAD renderings, mock-ups, charts, videos, graphs or any other visuals that support your argument

Things to consider:

- Your solution must work for either or both small aluminum tubes and larger caulk tubes as they are entrenched as the dispensing systems for most consumers

- It is preferred that a submission is cost effective and scalable enough to replace all nozzles on all tubes, but more expensive versions that are sold as standalone attachments are also acceptable

- Solutions should prevent curing for at least 6-12 months

- Creating an actual mock up and including video or providing CAD renderings is strongly encouraged for this project

- Please do not consider post-use capping solutions such as: Caulking Tube Cap 1 & Caulking Tube Cap 2

Added note: If you have an idea that is creative and outside the box, but not all the way there technically- send it in! We're interested in any new concepts that can open up new lines of thinking for our engineers!

    Submissions will be graded on the following criteria:
  • Meets Deliverables
  • Creativity
  • Clarity
Additional Materials:
Reward Tiers
5 Winners
will receive $150 each
5 Honorable Mentions
will receive $50 each
$150.00 Square pic 60 20160207 192251 University of Texas at Austin
$150.00 Square pic 60 img 20210214 171049 College for Creative Studies
$150.00 Square pic 60 headshot  2 University of Illinois
$150.00 S University of Waterloo
$150.00 Square pic 60 lhct Swarthmore College
$50.00 Square pic 60 wutlarge University of Illinois
$50.00 Square pic 60 dna University of Waterloo
$50.00 Square pic 60 prof Oregon State University
$50.00 Square pic 60 20141224 193836 Pasco-Hernando State College
$50.00 Square pic 60 bc6306d30a5405629076ea316aa6af0f Indian Institute of Technology - Bombay
Submission questions

Drag and drop photos or image files into your solution 0 characters Average: 1670 characters
    Your solution must be at least 0 characters long
    Enter your info to sign in
    or sign in with