U.S. Seal Salt/Ozone 3/4" Pool Pump Shaft Seal | PS-3868
US Seal
SKU: PS-3868
US Seal PS-3868 Mechanical Shaft Seal (3/4″ Shaft) – Salt & Ozone Rated
Part # PS-3868 — a heavy-duty mechanical shaft seal designed for pool and spa pumps with a 3/4″ motor shaft. Engineered for harsh environments, this seal is ideal for systems using salt-chlorine generators, ozone sanitation, or operating under elevated chemical or temperature conditions.
Key Features
- Designed for pumps using a 3/4″ diameter motor shaft.
- Constructed with Viton elastomers and corrosion-resistant materials for superior chemical and temperature durability.
- Carbon/graphite rotating face paired with a ceramic stationary seat for a reliable, long-lasting seal.
- Improved performance in saltwater, ozone, and high-stress water chemistry applications.
- Direct replacement for many OEM pump shaft seals used in residential and commercial pool/spa pumps.
Typical Applications
This seal is used when a pump begins leaking from the shaft area, especially in systems running saltwater chlorination, ozone injection, or heavy bather load. Ideal for replacing worn or failed seals when servicing pump motors, impellers, or wet-end assemblies.
Installation & Compatibility Notes
Before installation, disconnect electrical power and relieve system pressure. Remove the pump housing and impeller to access the existing seal. Clean the shaft and seal seat area thoroughly. Install the PS-3868 with proper orientation, ensuring the ceramic seat is fully and evenly seated. Reassemble the pump, restore circulation, and confirm no leakage at startup.
Why Choose This Seal?
The PS-3868 is a premium-grade seal that provides enhanced resistance to salt, ozone, heat, and aggressive water chemistry. It extends pump life, reduces maintenance frequency, and offers greater reliability than standard seals—making it a smart upgrade for demanding environments.
Maintenance Tips
- Inspect the pump's shaft area regularly for early signs of seepage.
- Ensure the shaft sleeve or motor shaft surface is smooth and free of corrosion before installing a new seal.
- Use only silicone-based lubricant on O-rings; avoid petroleum products.
- Protect the pump from freeze conditions and drain water during winterizing to prevent seal damage.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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