---
title: "What Is Lid O-ring? Pool Glossary | Marina Pool Services"
description: "The lid O-ring is the rubber ring that seals the pump lid and keeps air out. Plain-English pool glossary from Marina Pool Services in Grapevine, TX."
url: https://marinapool.multisites.ai/glossary/lid-o-ring
publisher: Marina Pool Services
phone: +1-817-896-1120
quote: https://marinapool.multisites.ai/contact
---

Equipment

# Lid O-ring

The lid O-ring is the rubber ring that seals the pump lid and keeps air out.

The lid O-ring is a small part with a big job. If it is dry, flat, or cracked, the pump pulls air and loses prime. You will see bubbles in the basket and weak flow.

Remove the ring, clean it, and rub on a coat of pool-safe lubricant when you clean the [basket](https://marinapool.multisites.ai/glossary/pump-basket). Replace it if it looks flat or cracked. Use silicone-based lube, not petroleum jelly, because that can damage rubber. A good seal helps the pump [prime](https://marinapool.multisites.ai/glossary/priming) and avoids an [air leak](https://marinapool.multisites.ai/glossary/air-leak).

[Marina can helpPool Pump Repair & Installation](https://marinapool.multisites.ai/our-services/pool-pump-repair)

## Related terms

-   [Pump basket](https://marinapool.multisites.ai/glossary/pump-basket)
-   [Air leak](https://marinapool.multisites.ai/glossary/air-leak)
-   [Priming](https://marinapool.multisites.ai/glossary/priming)
-   [Pool pump](https://marinapool.multisites.ai/glossary/pool-pump)

## Need a hand with your pool?

Call or text and tell us what your pool needs. Estimates are free for qualifying services, and same-day estimates are possible when the schedule allows.

[Call (817) 896-1120](tel:+1-817-896-1120)[Get a quote](https://marinapool.multisites.ai/contact)

![A pool technician working on an equipment pad](https://marinapool.multisites.ai/_astro/technician-equipment-pad.BW5xZMNY_Zum1K5.webp)