Slipstick Gorilla Outdoor 1-1/2 Inch Patio Chair Leg Caps for Wrought Iron Furniture (8 Pack) Floor Protecting Replacement Feet Glides for Metal Tables and Chairs, Nylon Sliders

Why these little caps matter

I spend more time than I’d like nudging heavy wrought iron chairs into place on a concrete patio. Bare metal cups grind, screech, and slowly chew up both the feet and the floor. I tested the Slipstick Gorilla nylon leg caps to fix that day-to-day annoyance and to keep rust in check. They’re simple snap-in glides designed for wrought iron legs with 1-1/2-inch inside-diameter cups, and they come in an 8-pack—enough for two typical chairs.

Fit and compatibility

The headline here is size. These caps are purpose-built for cups that measure 1.5 inches inside diameter. If your furniture uses 1-1/4-inch cups, these will not fit. Take a minute to measure properly before ordering—use a caliper if you have one, or at least a tape measure laid across the center of the cup. Also check that the cup is round, not ovalized, and free of heavy rust scale or curled edges that might block a clean snap-in.

A quick note on surfaces: these nylon caps are best for concrete, tile, and pavers. If your seating lives on a wood or composite deck, I’d steer you toward Slipstick’s Marine Berber line instead. The felted versions are kinder to softer decking and keep marks to a minimum.

Installation: straightforward and secure

Installing the Gorilla caps is intentionally uneventful—in a good way. Here’s what worked well:

• Clean the cup: I brushed out grit and scraped any flaking rust inside the cups. A flat screwdriver and a quick pass with medium-grit sandpaper helped.
• Warm the caps: A minute in hot tap water softens the nylon just enough to make seating easier without deforming the part.
• Align square: Set the cap on the cup and line it up straight. If you start crooked, you’ll fight it.
• Tap in with a rubber mallet: Two to three firm taps seated each cap flush. On the tightest cup, I needed a few extra hits. No metal hammer—use a rubber mallet.

Once in, they stayed in. I flipped each chair and tried to pull the caps out by hand; no movement. That snug interference fit is exactly what you want for outdoor use.

Performance on concrete, tile, and pavers

After install, the biggest change was silence. Dragged across broom-finished concrete, the chairs glided with a muted, plastic-on-stone whisper instead of that ear-splitting scrape. On porcelain tile, the caps slid even more smoothly, but not so slick that the furniture wandered with a bump of the knee. On rougher pavers, there’s a bit more resistance, but still an easy nudge to reposition.

Two subtle benefits stood out:

• Reduced friction means less strain on the furniture joints. Heavy frames flex less when they glide rather than bite into the ground.
• The caps lift the metal off the surface by a few millimeters, which keeps moisture from pooling around the bare steel and slows corrosion at the feet.

Durability and weather resistance

Nylon is a smart choice for outdoor glides: it’s hard-wearing, sheds grit, and doesn’t turn gummy in heat. After sun, rain, and plenty of use, the caps showed light scuffing but no cracking or edge fray. They don’t flatten into pancakes the way softer rubber feet can, and they shrug off small pebbles that would gouge softer plastics. UV exposure can be rough on polymers; these kept their shape and didn’t chalk up or turn brittle during testing.

One caution: if your patio hides sharp aggregate or you regularly slide across rough, uneven stone, expect wear to accelerate at the leading edge. That’s just the reality of abrasion. The good news is that wear is gradual and predictable, and replacements pop in without fuss.

Stability and chair feel

Glides often change how a chair feels on the ground. These add a firm, slightly damped interface. On hard tile, rocking is minimal, and the chairs feel planted. On uneven pavers, the caps are rigid enough to bridge shallow gaps without catching. If your furniture suffers from uneven feet, consider shimming one cup or selectively sanding the worst offender; the caps themselves won’t compensate for a significantly bent frame.

Aesthetics and clearance

In black, the caps blend cleanly with most black or dark bronze wrought iron. On lighter frames, you’ll see the black puck at the base, but it’s discreet. The added height is negligible visually, but functionally useful: raising the metal off wet ground slows rust at the feet and keeps the paint from chipping on first contact with stone.

What could be better

• Size-specific only: The dedicated 1.5-inch fit is great when it’s right, but if your cups are even slightly undersized, you’ll struggle. Sloppy cup manufacturing or old, dented feet can complicate installation.
• No deck-optimized option in the same pack size: If your use case shifts between patio and deck, it would be nice to have a compatible felted snap-in in the exact same dimensions. Slipstick makes deck-friendly alternatives, but they’re a different product line.
• Limited color choice: Black is the safe default, but a brown option would better match some oil-rubbed bronze frames.

None of these are deal-breakers, but they’re worth considering when you plan your order.

Practical tips from use

• Measure every chair: Don’t assume matching pieces share the same cup size—some mixed sets don’t. Measure each unique piece before buying a bulk pack.
• Prep beats force: Cleaning out rust and debris matters more than swinging a bigger hammer. A clean cup and warmed cap seat faster and straighter.
• Check retention yearly: Outdoor cycles can loosen anything press-fit. Give each foot a twist check at the start of the season.
• Keep a spare or two: An 8-pack covers two chairs; most patio sets will need more. Having a couple extras on hand pays off if one goes missing mid-season.

Value

For the price of a couple lattes per chair, you get quieter furniture, less scarring on hard surfaces, and slower rust at the feet. They’re thicker and more substantial than many generic glides, and the snap-in design feels like a factory solution rather than an afterthought. The 1-year replacement warranty is a welcome safety net, though I didn’t need it.

Who they’re for

• Owners of wrought iron or solid steel outdoor furniture with 1.5-inch inside-diameter cups
• Households with concrete, tile, or paver patios where scraping noise and marks are a problem
• Anyone who moves heavy chairs and tables frequently and wants smoother repositioning

If your furniture sits on a wood or composite deck, choose the company’s deck-safe felted glides instead. And if your cup size is 1.25 inches, look for the appropriately sized variant rather than forcing a mismatch.

Verdict

The Slipstick Gorilla nylon leg caps do exactly what they promise: they snap in securely, quiet the grind of metal on hard ground, and stand up to the weather. Installation is straightforward if you measure properly and prep the cups, and the long-wearing nylon strikes a smart balance between smooth sliding and controlled movement.

I recommend these for anyone with wrought iron furniture using 1.5-inch cup feet on concrete, tile, or pavers. They protect the surface, extend the life of your furniture’s feet, and make heavy pieces easier to live with—all without turning maintenance into a project. If your setup involves wood or composite decking, opt for Slipstick’s deck-friendly alternatives; otherwise, these caps are an easy, durable upgrade that solves a familiar outdoor annoyance.