DIYYILIF 30 Pieces Paint Sprayer Cup Liners, Transparent Spray Gun Bag, Spray Gun Cup Canister Liners, Paint Sprayer Accessories, Easy Color and Material Changes

I like any accessory that cuts cleanup time on a spray day. These DIYYILIF cup liners do exactly that: they keep the sprayer’s paint cup clean, speed up color changes, and reduce the slog of end-of-day scrubbing. They’re simple, no-frills plastic liners sized at 7 x 11.8 inches, and the value proposition is straightforward—drop a liner into the cup, pour paint, spray, then lift it out and toss it (or clip it closed to save for a second coat). After running them across multiple small and mid-size HVLP cups, they’ve earned a permanent spot in my spray kit—but not without a few caveats.

What you get and how they fit

You get 30 transparent liners in a pack, each large enough to fold over the rim of most handheld and small cup-style spray guns. The size is generous, which helps them seat into deeper cups and still leave enough overhang to secure the edge. The plastic is clear, so you can see fill level and any contamination at a glance.

Fit-wise, they’re flexible enough to conform to different cup geometries. In my shop, they worked with plastic handheld sprayer cups and traditional HVLP gravity-feed cups, though I had to be a bit intentional about how I folded the rim on the narrower ones. If your cup is unusually shallow or very narrow, you may need to trim excess height so the liner doesn’t bunch up and starve the pickup tube.

One important note: these are basic liners—just bags. They’re not a sealed-cup system with a lid and filter like PPS-style kits, and they won’t let you spray at odd angles or upside down. Think of them as paint cup “drop cloths,” not as a replacement for a closed-cup system.

Setup and use

The routine is simple:
- Seat the liner deep into the cup, working out large folds at the bottom.
- Fold or roll the overhang around the rim so it doesn’t creep inward during spraying.
- Strain your paint before it hits the liner. A paper cone is fine, but a wide-mouth plastic canning funnel plus a strainer makes life much easier and cleaner.
- Reinstall the lid and spray as usual.

On handheld units with airflow vents in the lid, make sure the liner isn’t blocking the vent path. On gravity cups with a pickup tube, check that the liner isn’t pinched under the tube; if it is, rotate or flatten the liner seam.

For quick color changes, I pull the liner, clip it shut with a bag clip, give the nozzle/needle/air cap a fast rinse, drop in a clean liner, and keep moving. It’s easily the fastest route I’ve found for multi-color trim or cabinetry work without bringing in a full disposable-cup system.

Performance and leak resistance

Most liners performed as expected: they kept the cup spotless and made cleanup nearly trivial. I could switch colors in a few minutes and end the day with almost no paint film to scrub off the cup. Paint flow was consistent as long as I seated the liner well and kept folds from collapsing inward.

I did run into a few leakers across a couple of packs—seam splits on fill or after a few minutes in the cup. It wasn’t common, but it happened enough that I built a quick precheck into my workflow: I pour an ounce or two of water into a fresh liner and gently squeeze near the seams. If I see a weep, that liner goes in the trash before I ever load paint. This extra 15 seconds is worth it and essentially eliminated mid-spray surprises.

If you’re spraying anything with sharp edges inside the cup (some cups have a seam, a protruding filter, or a rough pickup tube end), the liner can snag. A quick pass with fine sandpaper on a sharp plastic edge or adding a small silicone band around the pickup tube helps prevent punctures.

Cleanup and storage between coats

Cleanup is where these shine. On water-based coatings (interior latex, acrylic trim paints, most waterborne clears), I saved at least half the time I’d typically spend on the cup itself. You still need to flush the gun body and clean the air cap and nozzle—these liners don’t eliminate that—but the messiest part of the job is gone.

Storing paint between coats works surprisingly well. I clip the liner closed, push out excess air, and set it upright in a small container with a damp paper towel over the top. For same-day or next-day use, this keeps skins to a minimum. For longer storage, I’d decant into a proper container—liners aren’t intended as long-term paint storage.

Solvent compatibility

I primarily ran water-based products through these. For solvent-heavy coatings (hot lacquer thinner, strong reducers, or aggressive two-part systems), I’d be cautious. The plastic has handled mild mineral spirits in my spot tests, but I wouldn’t count on it for extended soak times or repeated use with strong solvents. If your workflow lives in automotive or industrial solvent territory, a sealed liner-and-lid system rated for those chemicals is a better bet.

How they compare to more advanced systems

These are budget-friendly consumables with a single mission: keep the cup clean and speed color changes. They don’t filter paint for you, they don’t maintain a sealed, collapsible cup for spraying at odd angles, and they don’t integrate with gun adapters. If you need the flexibility and reliability of a closed, vented liner system, step up to a PPS-style setup. If you mostly spray upright with water-based coatings and value low-cost consumables, these do the job well.

Tips to get the most out of them

• Strain first, pour second. A wide-mouth canning funnel keeps things tidy.
• Water test new liners quickly to weed out seam defects.
• Trim excess height for shallow cups to prevent liner collapse.
• Use a bag clip or small rubber band to secure the overhang if your cup lid doesn’t clamp firmly.
• Don’t overtighten the cup lid; crushing the liner at the rim can cause weeping.
• Keep an eye on the pickup tube—make sure the liner isn’t tucked under it.
• Store short-term by clipping the liner and standing it upright; flush the gun even if you plan to reuse the paint later.

Environmental and cost considerations

These are disposable, so you’re trading plastic waste for time savings. I occasionally reuse a liner for the same color within a single day, but once dried paint starts to flake inside, it’s time to toss it. If you’re shooting daily at high volumes, a rinsable hard cup or a long-life liner system may be more sustainable. For occasional to moderate use, the time saved—and the reduced water and solvent used in cleaning—balances the waste for me.

Pros and cons

Pros:
- Cuts cleanup time significantly on water-based coatings
- Keeps cups essentially spotless
- Fast, low-cost color changes without buying a full cup system
- Generous size fits most small to mid-size cups
- Transparent material makes fill level obvious

Cons:
- Occasional seam defects; quick precheck recommended
- Not suited for heavy solvent exposure or long-term storage
- No integrated filtering or sealed lid; upright spraying only
- Can collapse or obstruct pickup tubes if not seated carefully
- Still requires standard gun flushing and nozzle cleaning

Bottom line and recommendation

I recommend the DIYYILIF cup liners for painters who spray primarily water-based coatings and want faster color changes with less mess. They’re inexpensive, simple to use, and they dramatically reduce cleanup on the cup side of the equation. You’ll still need to flush the gun and maintain your nozzle and air cap, and you should plan on a quick water test to screen out the occasional weak seam. If you need leak-proof reliability with hot solvents or the ability to spray at extreme angles, invest in a sealed liner-and-lid system instead. For day-to-day trim, cabinetry, and small projects with upright spraying, these liners are a practical, time-saving upgrade.