SeaLife O Ring Set (1 each) for SportDiver Underwater Housing
SeaLife O Ring Set (1 each) for SportDiver Underwater Housing is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at In Store
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product Information
The SeaLife O-Ring Set for SportDiver and SportDiver S Housing (SL40010) is a replacement sealing kit that restores waterproof integrity to SeaLife's SportDiver underwater smartphone housings. It includes a main seal o-ring and a vacuum check port o-ring, and it is built specifically for the SL400, SL400-U, and SL408 housings.
Who it is for
This o-ring set is for SportDiver owners performing routine maintenance or replacing worn, nicked, or aged seals before a dive trip. Anyone who notices a scratched or compressed o-ring on their housing, or who services the housing on a regular schedule to prevent flooding, needs this kit on hand. It is not a fit for owners of the SportDiver Ultra Housing (SL405), which uses a different, separately sold o-ring kit (SL40510).
Key details
- SKU/MPN: SL40010
- Weight: 0.109375 lbs (50 g)
- Package dimensions: 4.75 in x 8.75 in x 0.60 in
- Origin: China
- Install the main seal o-ring with the flat side facing inward
- O-ring lube is sold separately (SeaLife Silicone O-ring Lube, SL9807)
Compatibility and sizing
This set fits the SeaLife SportDiver Underwater Smartphone Housing (SL400), the SportDiver Underwater Smartphone Housing (SL400-U), and the SportDiver S Underwater Smartphone Housing (SL408). It does not fit the SportDiver Ultra Housing (SL405), which requires the separate SL40510 kit.
What's in the box
- 1 x Main seal o-ring
- 1 x Vacuum check port o-ring
DiveCatalog.com is an authorized SeaLife dealer and a dive shop in Irvine, California, serving divers since 2003. Call or chat with us at 888-701-4017 if you need help confirming fit for your SportDiver housing model.
- Purpose-built replacement seals: Designed specifically for SeaLife SportDiver underwater smartphone housings.
- Two-piece kit: Includes one main seal o-ring and one vacuum check port o-ring.
- Maintains waterproof integrity: Replaces worn or damaged seals to help prevent flooding of the housing.
- Correct installation matters: The main seal o-ring must be installed with the flat side facing inward.
- Lube sold separately: Pair with SeaLife Silicone O-ring Lube (SL9807) for proper installation and seal performance.
- Fits multiple SportDiver models: Compatible with SL400, SL400-U, and SL408 housings.
- Not for the Ultra Housing: Does not fit the SportDiver Ultra Housing (SL405), which requires the separate SL40510 kit.
- Lightweight kit: Ships at 0.109375 lbs (50 g) in a 4.75 in x 8.75 in x 0.60 in package.
| SKU/MPN | SL40010 |
| Barcode | 077068501312 |
| Weight | 0.109375 lbs (50 g) |
| Package dimensions | 4.75 in x 8.75 in x 0.60 in |
| Origin | China |
| Compatible housings | SportDiver SL400, SportDiver SL400-U, SportDiver S SL408 |
| Not compatible with | SportDiver Ultra Housing SL405 (requires SL40510) |
| Contents | 1 main seal o-ring, 1 vacuum check port o-ring |
| Recommended accessory | SeaLife Silicone O-ring Lube SL9807 (sold separately) |
- 1 x Main seal o-ring
- 1 x Vacuum check port o-ring
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Does this o-ring set fit the SportDiver Ultra Housing?
No. The SL40010 o-ring set fits the SportDiver (SL400, SL400-U) and SportDiver S (SL408) housings only. The SportDiver Ultra Housing (SL405) uses a different o-ring kit, SL40510, which must be purchased separately.
Do I need o-ring lube with this kit?
Yes. The SL40010 set includes the o-rings only; lubricant is sold separately. SeaLife recommends its Silicone O-ring Lube (SL9807) to properly install and maintain the main seal o-ring and vacuum check port o-ring.
How should the main seal o-ring be installed?
The main seal o-ring must be installed with its flat side facing inward. Correct orientation is important for a proper watertight seal.
What exactly comes in the SeaLife O-Ring Set SL40010?
The kit includes two o-rings: one main seal o-ring and one vacuum check port o-ring. Both are sized and designed specifically for the SeaLife SportDiver and SportDiver S underwater smartphone housings.












