Quick answer
Press the suction cup onto a smooth, non-porous surface, push the Vac-U-Lock plug firmly into your attachment until it seats, then tug gently to confirm both connections before use. Choose the Deluxe Suction Cup Plug for adjustable angles and shower use, or the Large Black Suction Cup Plug when you need extra stability for the heaviest attachments.
Match the base to your attachment and surface
The two suction cup plugs solve different problems. The Deluxe model has a lever-release cup and a swiveling, bendable arm that locks into position, so it suits shower walls and angled setups. The Large Black model is a jumbo, extra-sturdy base built for the largest Vac-U-Lock attachments, and it is compatible with every attachment in the collection.
Surface choice matters as much as the base. Both cups need a smooth, non-porous surface such as tile, glass, or polished acrylic. Textured tile, grout lines, and matte plastic give air a path under the cup, and no amount of pressing will fix that.
When a suction cup is the wrong tool
A suction cup trades portability for dependence on a good surface. If your only option is a textured wall or a soft surface, a strap-on harness or a flat-based mount will be more reliable. Also skip the suction cup if you plan to pull at a steep sideways angle; the cup holds best when force runs roughly perpendicular to the surface.
Step-by-step setup
- Clean and dry the surface: Wipe the tile, glass, or acrylic with a damp cloth and let it dry completely. A film of soap, body wash, or dust is the most common reason a cup slides or releases mid-use. Run a finger over the spot; if you feel texture or grout, choose another surface.
- Seat the attachment on the plug: Push the Vac-U-Lock attachment straight down onto the plug until it stops, then twist slightly to confirm it is fully seated. Pushing at an angle can leave the plug only partly engaged. Give the attachment a gentle upward tug; it should feel locked, not loose.
- Press and hold the cup: Place the cup flat and press the center firmly for several seconds to push out trapped air. For the Deluxe model, set the arm angle and lock it before you let go. If the cup lifts at one edge, the surface is not flat enough; move to a smoother spot.
- Test before you commit: Pull gently in the direction you plan to use it. A well-seated cup holds firm; a cup that pops or shifts needs re-seating or a different surface. Re-test after adding lube, since spilled lube can creep under the cup edge.
- Release and store properly: Use the lever-release tab on the Deluxe model to break the seal, then lift the cup by the edge rather than yanking the attachment. Rinse and dry both the cup and plug before storage. Store the cup flat and unsealed so the rim does not deform between uses.
Product facts
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Vac-U-Lock - Deluxe Suction Cup Plug Accessory: Lever-release suction cup with a strong adjustable arm that swivels, bends, and locks into place. You can set an angle once and keep it, which is useful in the shower where a fixed vertical cup would be awkward.
Vac-U-Lock - Deluxe Suction Cup Plug Accessory
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Vac-U-Lock - Large Black Suction Cup Plug: Jumbo, extra-sturdy suction cup base topped with the classic Vac-U-Lock plug and compatible with every Vac-U-Lock attachment. Pick this base when you want maximum stability for the heaviest attachments rather than adjustable positioning.
Vac-U-Lock - Large Black Suction Cup Plug