Winter Rubber Expansion Plug #5 w/ White Nylon Wing Nut for 1" Tube | SP-205
Technical Products
SKU: TPCSP205
Technical Products SP-205 Winter Expansion Plug #5 – For 1" Tube
The Technical Products SP-205 is a #5 rubber winter expansion plug designed to seal 1" inside-diameter (ID) lines/tubes during pool winterization. The plug expands as you tighten the wing nut, creating a secure, watertight seal to help prevent water from re-entering the line and causing freeze damage.
Key Features
- Fits: 1" ID tube/line (common winterizing size)
- Expansion style seal: Tightening compresses the rubber to expand and grip the inside of the pipe
- Durable rubber body built for seasonal freeze protection
- Wing nut tightening for quick install and removal (no tools typically required)
- Helps protect plumbing from freeze-related cracking by keeping water out after blowout
Specifications
- Manufacturer: Technical Products
- Part Number: SP-205
- Plug Size: #5
- Application: Winterizing / line sealing
- Line Size: 1" ID tube/pipe (verify your line ID before ordering)
Common Uses
- Sealing small pool plumbing lines after blowing out water
- Blocking auxiliary ports, cleaner lines, or accessory lines that match a 1" internal diameter
- General-purpose seasonal sealing for compatible 1" tubes/ports
Installation Notes
- Insert the plug into a clean, dry pipe opening.
- Tighten the wing nut until the rubber expands and seals firmly.
- Do not overtighten—tighten only until snug and leak-free.
- Remove in spring by loosening the wing nut and pulling the plug straight out.
Related Products
- Technical Products Winter Plugs (Other Sizes)
- Pool Winterizing Plugs
- Skimmer Protection Gizmos
- Pool Winterizing Kits
- Air Blowout Adapters & Fittings
- Thread Seal Tape
Maintenance Tips
- Verify line size by measuring the inside diameter of the pipe—winter plug sizes are based on the opening they seal.
- After installation, check for seepage; a properly expanded plug should seal without needing excessive force.
- Store plugs clean and dry in the off-season to extend rubber life.
- If the rubber is cracked, stiff, or won’t expand evenly, replace the plug before winterizing.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 8:00 am to 4:00 pm Phoenix Time
Saturday and Sunday: Closed
- Orders costing more than $300 WILL be required to have signature confirmation upon delivery.
- Handling time is typically only 1 day.
- Any item ordered after 1pm Phoenix time, may not ship same-day.
- Call us if you require expedited shipping and we can give you quotes based on your needs.
Return Policy:
- All products, except as noted below, are eligible for return up to 30 days after receipt of item.
- For returns, an RMA form must be filled out HERE or customers can call for additional help.
- Shipping costs will be deducted from all returned items.
- Any item that is missing accessories, original packaging, or is not returned in the same condition that it was received in, may be subject to a re-stocking fee up to 100% based on the condition we receive it in.
- Items broken, damaged, or inoperable due to installer error will not be refunded.
- Fill out the return form or give us a call to obtain an RMA and return shipping label.
- There are no returns on the Pentair Colorsync 618031
- No returns on pool cleaners.
- No returns on opened seals and o-rings.
- No returns on capacitors.
- If a light is returned because it "doesn't work" and it tests fine, the cost to ship and a re-stocking fee will be deducted from the refund.
- All products denied upon arrival at customers house WILL be charged the cost to ship.
- Visa Gift Card Promotions: Gift cards are sent within 14 days of the order. When accepting the Visa Gift card, you agree that if your order is returned or refunded, this amount will be deducted from the refunded amount. All Visa Gift cards are sent via email in an E-Gift Card format and are non refundable.
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