Sealand 385310151 O-Ring Kit for S & T Series Pumps
If your marine or RV toilet pump has started weeping around the housing, chances are the culprit is a pair of worn-out O-rings. The Sealand 385310151 O-Ring Kit gives you exactly what you need to fix that problem without replacing the entire pump. This set includes two seals engineered to fit S and T series pumps that use the bolt-on top closure design, the kind held together with eight screws rather than a clamp ring. It's a small, inexpensive part, but it plays a big role in keeping your sanitation system sealed and functioning the way it should.
This kit is most commonly reached for during a bellows replacement, since pulling the pump housing apart is the perfect opportunity to swap out old, hardened O-rings for fresh ones. Reusing worn seals after a repair is one of the easiest ways to end up doing the same job twice, so most technicians and boat owners install new O-rings any time the pump is opened up. The kit is straightforward to install and typically comes with instructions, making it a manageable DIY task even for owners who aren't especially mechanically inclined.
It's worth double-checking your pump style before ordering, since older ring-clamp pump bodies use a different O-ring set. This kit is built specifically for the newer bolt-style housings found on S, T, and related pumps manufactured from 1990 onward. Getting the right kit the first time saves a return trip to the parts counter and gets your system back in working order faster.
Key Features:
- Set of 2 replacement O-rings designed for bolt-on pump housings
- Fits pumps secured with an 8-screw top and bottom closure
- Durable sealing material built to resist wear from regular use
- Simple, straightforward installation
- Genuine fit for Sealand and Dometic pump models
Applications:
- Replacing worn seals during pump bellows service
- Repairing leaks around the pump housing
- Routine maintenance on marine and RV sanitation pumps
- Rebuilding S, T, and J series bolt-style pumps
Specifications:
- Part Number: 385310151 (also referenced as 310151)
- Quantity: 2 O-rings per kit
- Compatible Pump Series: S, T, and J series bolt-style pumps
- Closure Type: 8-screw bolt-on design
- Compatibility Period: Bolt-style pumps from 1990 to present
- Not compatible with older ring-clamp style pump bodies
Frequently Asked Questions
Q: Will this O-ring kit fit an older ring-clamp style pump?
A: No. This kit is designed for bolt-style pumps with 8 screws connecting the top and bottom housing. Older ring-clamp pumps require a different O-ring set.
Q: How many O-rings come in this kit?
A: The kit includes a set of 2 O-rings, enough for one complete pump housing reseal.
Q: When should I replace these O-rings?
A: Most owners replace them any time the pump housing is opened, such as during a bellows replacement, or when they notice leaking around the housing seam.
Q: Does this kit include installation instructions?
A: Yes, installation instructions are typically included with the kit to help guide the reseal process.
Q: Is this kit compatible with both S and T series pumps?
A: Yes, it is designed to fit both S series and T series pumps that use the bolt-on 8-screw closure style, and it also fits certain J series pumps.
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