# The RectorSeal Corporation

> The RectorSeal Corporation is a VC fund backing Energy Storage. See 3 investments, round sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Houston, United States
- Total investments: 3
- Last investment: Mar 2026
- Lead investor: 100%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/rectorseal/
- X (Twitter): https://www.twitter.com/@RectorSeal
- Website: https://rectorseal.com
- Facebook: https://www.facebook.com/rectorseal/

The RectorSeal Corporation is a leading manufacturer of chemical and specialty products designed for professional tradesmen.

## Contacts

5 contacts available for The RectorSeal Corporation. Shizune tracks 1 team members at The RectorSeal Corporation. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/the-rectorseal-corporation?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Energy Storage | 1 | 33% |
| Energy Management | 1 | 33% |
| Internet of Things | 1 | 33% |

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series B | 1 | 33% |
| Venture - Series Unknown | 1 | 33% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Don J. Sullivan | President and CEO | 0 | — |

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Flair | Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling. The company builds smart hardware and software for HVAC controls focused on efficiency, comfort, electrification, and smart grid integration. The company's products are sold through multiple channels including direct to consumer, HVACdistribution, and utilities. | $5.7M | Series B | Mar 31, 2026 |  |
| Flair | Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling. The company builds smart hardware and software for HVAC controls focused on efficiency, comfort, electrification, and smart grid integration. The company's products are sold through multiple channels including direct to consumer, HVACdistribution, and utilities. |  | Venture - Series Unknown | Dec 17, 2024 |  |
| Flair | Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling. The company builds smart hardware and software for HVAC controls focused on efficiency, comfort, electrification, and smart grid integration. The company's products are sold through multiple channels including direct to consumer, HVACdistribution, and utilities. |  | Venture - Series Unknown | Dec 17, 2024 |  |

3 of 3 investments shown.

## Co-investors
- [SOSV](https://shizune.co/investors/profile/sosv) — VC Fund, 5 deals together
- [Skyview Ventures](https://shizune.co/investors/profile/skyview-ventures) — VC Fund, 3 deals together
- [Lowercarbon Capital](https://shizune.co/investors/profile/lowercarbon-capital) — VC Fund, 2 deals together
- [SIG venture capital](https://shizune.co/investors/profile/sig-venture-capital) — VC Fund, 2 deals together

## Similar investors

### Similar stage
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund
- [FJ Labs](https://shizune.co/investors/profile/fj-labs) — VC Fund

## FAQ

### What does The RectorSeal Corporation invest in?

The RectorSeal Corporation invests primarily in Energy Storage, Energy Management and Internet of Things startups, most often at Series B and Venture - Series Unknown stage. Most of the 3 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact The RectorSeal Corporation?

Public channels for The RectorSeal Corporation include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### Who are the partners at The RectorSeal Corporation?

The team at The RectorSeal Corporation includes Don J. Sullivan (President and CEO). The Team section lists each member with their title, investment count and links.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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