🚀 New launch promo — 10% off orders over $300. Use code LAUNCH10
Bubbles Supply
Not sure which part you need? Upload a photo and we'll find it. →
7/16" ID x 5/8" OD O-Ring 805-0111 - Bubbles Supply

7/16" ID x 5/8" OD O-Ring 805-0111

Part #: 805-0111

$1.31
In stock — ships today
Qty
🔒 Secure checkout↩️ 30-day returns✅ 1-year warranty
Add to B2B order list

Not sure this fits?

Send us a photo of your old part — we'll confirm the right replacement before you order.

Upload a Photo
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this seal/gasket

This genuine Waterway O-ring (805-0111) provides a reliable seal for spa drain plugs and various plumbing connections. With precise 7/16" inner diameter, 5/8" outer diameter, and 3/32" cross-section dimensions, this OEM replacement part ensures proper fit across most spa and hot tub brands requiring these exact specifications.

Manufactured to Waterway's exacting standards, this durable rubber O-ring delivers the leak-proof performance your spa demands. We guarantee exact fit for your application and ship same-day from our Canadian warehouse, backed by our comprehensive 1-year warranty. Whether replacing a worn drain plug seal or servicing plumbing fittings, this quality component restores factory-level sealing performance. Always clean the O-ring groove thoroughly and apply a thin layer of silicone lubricant before installation to ensure proper seating and maximum seal life.

Exact part number

805-0111

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 3/32 cross-section spa O-ring
  • 7/16 ID O-ring spa
  • 805-0111 O-ring
  • Waterway drain plug O-ring

Looking for an older part number? Check our supersession lookup tool

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Slow drip or steady leak at drain plug
  • Water seeping from plumbing fitting connection
  • O-ring visibly cracked, flattened, or brittle
  • Leak reappears shortly after tightening a fitting
  • Fitting won't hold pressure during equipment pad testing

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Measure your existing O-ring — confirm 7/16" ID, 5/8" OD, and 3/32" cross-section before ordering
  • Inspect the O-ring groove for scoring, corrosion, or debris that could prevent a proper seal even with a new ring
  • Confirm whether your fitting requires a single O-ring or a stacked/double O-ring configuration
  • Check that the mating surface of the fitting or drain plug is smooth — a pitted seat will defeat the new seal
  • Have silicone-based O-ring lubricant on hand before you start — petroleum-based products degrade rubber O-rings

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Easy — DIY-friendlyTypically 5–15 minutes

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

🔒 Secure checkout · SSL encrypted·🇺🇸🇨🇦 Serving the US and Canada·↩️ 30-day hassle-free returns·📦 Same-day fulfillment