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Contaminant Comparison Chart

For a complete list of contaminants that PUR filters reduce, please view our Performance Data Sheets here.

 

 

 

PUR & PUR PLUS FAUCET FILTERS
RF3375/RF9999

View Filters

PUR PLUS PITCHER FILTERS
PPF951K

View Filter

PUR BASIC PITCHER FILTERS
PPF900Z

View Filter

 

Vs. Brita*
Lead ✓ ✓
Microplastics ✓ ✓
Mercury ✓ ✓ ✓
Chlorine Taste & Odor ✓ ✓ ✓
DEET ✓
TTHM ✓

PUR’s Filtration Systems Are Certified By NSF And WQA For Their Contamination Reduction. WQA certifications as of 5/27/21 for Faucet filter models RF-3375 and RF-9999.

¹ Certified to reduce 10X more chemical and physical substances than Brita’s® leading pitcher filter.
² Certified to reduce 3X more chemical and physical substances than Brita’s® leading pitcher filter.
³ Certified to reduce 2X more chemical and physical substances than Brita’s® leading pitcher filter.
*Versus best-selling Brita® pitcher filter OB03. Brita® is a trademark of Brita LP.
**Like other leading brands, PUR does not filter microbes. As of 3/1/23 Brita® and ZeroWater® were not certified to filter microbes. Brita® is a trademark of Brita LP. ZeroWater® is a trademark of Zero Technologies, LLC..

 

PUR & PUR PLUS FAUCET FILTERS

 

 

 

PUR & PUR PLUS FAUCET FILTERS
RF3375/RF9999

View Filters
 

Vs. Brita*
Lead ✓
Microplastics ✓
Mercury ✓
Chlorine Taste & Odor ✓
DEET ✓
TTHM ✓

PUR’s Filtration Systems Are Certified By NSF And WQA For Their Contamination Reduction. WQA certifications as of 5/27/21 for Faucet filter models RF-3375 and RF-9999.

¹ Certified to reduce 10X more chemical and physical substances than Brita’s® leading pitcher filter.
² Certified to reduce 3X more chemical and physical substances than Brita’s® leading pitcher filter.
³ Certified to reduce 2X more chemical and physical substances than Brita’s® leading pitcher filter.
*Versus best-selling Brita® pitcher filter OB03. Brita® is a trademark of Brita LP.
**Like other leading brands, PUR does not filter microbes. As of 3/1/23 Brita® and ZeroWater® were not certified to filter microbes. Brita® is a trademark of Brita LP. ZeroWater® is a trademark of Zero Technologies, LLC..

 

PUR PLUS PITCHER FILTERS

 

 

PUR PLUS PITCHER FILTERS
PPF951K

View Filter

 

Vs. Brita*
Lead ✓
Microplastics ✓
Mercury ✓
Chlorine Taste & Odor ✓
DEET
TTHM

PUR’s Filtration Systems Are Certified By NSF And WQA For Their Contamination Reduction. WQA certifications as of 5/27/21 for Faucet filter models RF-3375 and RF-9999.

¹ Certified to reduce 10X more chemical and physical substances than Brita’s® leading pitcher filter.
² Certified to reduce 3X more chemical and physical substances than Brita’s® leading pitcher filter.
³ Certified to reduce 2X more chemical and physical substances than Brita’s® leading pitcher filter.
*Versus best-selling Brita® pitcher filter OB03. Brita® is a trademark of Brita LP.
**Like other leading brands, PUR does not filter microbes. As of 3/1/23 Brita® and ZeroWater® were not certified to filter microbes. Brita® is a trademark of Brita LP. ZeroWater® is a trademark of Zero Technologies, LLC..

 

PUR BASIC PITCHER FILTERS

 

 

 

PUR BASIC PITCHER FILTERS
PPF900Z

View Filter

 

Vs. Brita*
Lead
Microplastics
Mercury ✓
Chlorine Taste & Odor ✓
DEET
TTHM

PUR’s Filtration Systems Are Certified By NSF And WQA For Their Contamination Reduction. WQA certifications as of 5/27/21 for Faucet filter models RF-3375 and RF-9999.

¹ Certified to reduce 10X more chemical and physical substances than Brita’s® leading pitcher filter.
² Certified to reduce 3X more chemical and physical substances than Brita’s® leading pitcher filter.
³ Certified to reduce 2X more chemical and physical substances than Brita’s® leading pitcher filter.
*Versus best-selling Brita® pitcher filter OB03. Brita® is a trademark of Brita LP.
**Like other leading brands, PUR does not filter microbes. As of 3/1/23 Brita® and ZeroWater® were not certified to filter microbes. Brita® is a trademark of Brita LP. ZeroWater® is a trademark of Zero Technologies, LLC..

 

What Are the Best Furniture Suction Cups?

Furniture can look solid while its finish remains surprisingly delicate. A suction cup may steady a side table, secure a cabinet organizer, or protect a glass tabletop from sliding. But “best” depends on the surface, the load, and how often you move the furniture. A glossy, clean panel usually offers a better seal than textured wood or dusty laminate. Small details matter.

The scale of the furniture market gives this practical question wider context. Grand View Research valued the global furniture market at about $677.09 billion in 2023 and projected continued growth through 2030. That report describes the broader market, not suction-cup performance, so it cannot identify a winning product. Still, it highlights why reliable accessories deserve careful selection. A Furniture Suction Cup should have a clearly stated load capacity, suitable material, and dimensions that match the contact area. Look for manufacturer testing details, then consider the real conditions: a humid bathroom, a warm window, or a heavy cabinet door can weaken a seal. No cup suits every surface. This guide compares common designs and explains what specifications can—and cannot—tell you before you buy.

What Are the Best Furniture Suction Cups?
Table of Contents [Hide]
1 What Furniture Suction Cups Are and How They Work
2 Key Features That Determine Suction Cup Performance
3 Types of Suction Cups Used for Furniture
4 How to Choose Suction Cups for Different Furniture Surfaces
5 Installation, Maintenance, and Safety Considerations

What Furniture Suction Cups Are and How They Work

Furniture suction cups are flexible cups fitted beneath chair, table, or cabinet legs. Pressing one against a smooth floor pushes out some air; the lower pressure inside lets outside air press the cup against the surface. The seal helps resist sliding. NIST lists standard atmospheric pressure as 101.325 kilopascals, a reference value used in engineering calculations. That sounds powerful. But pressure alone does not give a safe load rating.

For scale, a perfectly sealed, five-centimeter cup could produce about 199 newtons of force under an ideal vacuum, calculated from pressure difference times cup area. Real cups hold less. Dust, textured flooring, worn rubber, and sideways pulling can weaken the seal. A polished tile may grip well; a dusty grout line may not. Check the maker’s stated load and test the cup gently before relying on it. I would not treat suction cups as tip-over restraints or assume a heavy cabinet is secure because its feet resist a nudge. They work best as a friction aid on clean, smooth, nonporous surfaces, and their grip can fade unnoticed.

Key Features That Determine Suction Cup Performance

A furniture suction cup works only when its rim forms a continuous seal. Smooth, nonporous glass usually seals better than textured wood or dusty laminate. Cup diameter matters, too: a 50 mm cup has about 0.00196 square metres of area. At a 10 kPa pressure difference, the theoretical holding force is roughly 19.6 newtons, or about 2 kilograms-force. This is a calculation, not a safe-load rating. NIST’s Guide for the Use of the International System of Units (SP 811) gives standard atmospheric pressure as 101,325 pascals; real cups use only part of that pressure difference.

Look at material flexibility, lip design, and the release tab. A supple rim can follow small surface irregularities, while a stiff or warped edge may leak. Dust, oil, and tiny scratches can weaken the seal, even when the cup looks firmly attached. Temperature also matters: some elastomers stiffen in cold rooms and soften near heaters. Test the cup on the actual furniture surface, then check it again after a few hours. A neat calculation can still mislead. For shelves or objects above people, treat suction as temporary support unless the cup’s tested load rating and surface conditions match the use.

Types of Suction Cups Used for Furniture

Furniture suction cups come in several forms, and the right type depends on the surface and load. Flat cups are common for smooth glass, glazed tile, or metal. Their wide rims spread contact across the surface, helping hold lightweight items steady. They are not suitable for rough wood, fabric, or textured finishes. Air leaks in quickly on those surfaces. A clean, dry contact area matters more than a large cup alone.

Bellows-style cups have flexible, folded sides that compress slightly when pressed down. This can help them adapt to small surface irregularities, though they still need a mostly smooth, nonporous base.

Some furniture fittings use cups with a threaded stem or mounting insert. These attach to a leg or small accessory, while the cup grips the floor or another smooth surface. Soft silicone cups may cushion contact and reduce scratching. There is no perfect type; a softer cup may protect finishes but can shift under sideways force.

Tips: Wipe both surfaces before fitting, press out trapped air, and test the hold gently. Check cups regularly, especially in warm or dusty rooms. Do not rely on suction alone to support heavy furniture or prevent a serious tip-over. If a cup keeps slipping, the surface may simply be unsuitable. That is easy to overlook.

How to Choose Suction Cups for Different Furniture Surfaces

For glass tabletops and smooth, sealed stone, choose a flexible cup with a clean, even rim. Wipe away dust and grease, then dry the surface completely. Clean, dry, and smooth. A cup needs continuous contact to hold its seal; tiny crumbs or a chipped edge can let air in. Press the center firmly and check that the rim lies flat.

Finished wood and laminate can work if their coatings are smooth and intact. Avoid cups on unfinished timber, deep grain, peeling paint, or heavily textured finishes. These surfaces can create small air channels, even when they look fairly flat. Test one cup in an inconspicuous spot, especially on delicate paint. A strong first grip does not guarantee a lasting hold.

For leather, fabric, and porous upholstery, ordinary suction cups are usually unreliable because air passes through or the surface bends. A larger cup may spread pressure on a hard, smooth panel, but size alone cannot fix texture. Match cup diameter to a flat area, and follow its stated load limit; furniture movement can add strain. Recheck the seal after placing the item. It is easy to overestimate how secure a cup feels.

What Are the Best Furniture Suction Cups? How to Choose for Different Surfaces

How to read this chart: The 1–5 scores are a qualitative guide, not laboratory test results. Suction cups generally work best on smooth, flat, nonporous surfaces. Dust, seams, texture, and porous materials can prevent a reliable seal. Check the cup and furniture manufacturer’s instructions before use.

Installation, Maintenance, and Safety Considerations

Furniture suction cups work best on clean, smooth, nonporous surfaces such as glass or polished tile. Check that the cup fits the furniture foot and the surface is flat, without seams or deep scratches. Wipe both areas with a damp cloth, then dry them fully. Dust and moisture can weaken the seal. Small detail, big difference.

Press each cup firmly into place, starting at the center and pushing out trapped air. Follow the product’s instructions for any locking tab or recommended waiting time. Before moving the furniture, test each cup with a gentle pull. A cup that looks attached may still have a loose edge; I’ve found that checking the rim is easy to forget. Don’t rely on suction cups to secure tall or heavy furniture against tipping, or to support people. They can release without much warning.

Inspect the cups regularly, especially after cleaning or moving the furniture. Lift an edge carefully to release suction rather than yanking the furniture sideways. Wash cups with mild soap and water, then let them air-dry; harsh cleaners or sharp tools may damage the surface. Replace cups that are cracked, stiff, warped, or no longer hold. Even careful installation is not a guarantee, so keep furniture stable and use suitable anchoring where needed.

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