Can this be used with a regular portafilter? Or has it got to be a bottomless one?

As long as the portafilter you are using is 54mm then it should work just the same.

I have the notsek 51mm and use it in a 53mm basket. you think one in 53mm would work better or 2mm space doesn't bother? i think it doesn't.

yes I think 53mm would be better then you may not have channelling anywhere hope this helps

Is this supposed to be completely flat? I received mine a few days ago and it is a bit convex (pointy) in the middle and the ouside slightly higher.

Yes in my opinion it should be flat. Mine is. Level with the top of the coffee grains in the portafilter basket.

Can someone help me out - i have a sage barista express and confused on size to purchase sizings of 54mm and 58.5mm

The Barista Express is a 54mm portafilter so you want the 53.5mm one.

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NOTSEK Espresso Puck Screen 54mm for Sage Ninja Portafilter 1.7mm

NOTSEK Espresso Puck Screen 54mm for Sage Ninja Portafilter 1.7mm

Product ID: 438093703

Details

Brand
NOTSEK
Compatible devices
Coffee Maker
Material
Stainless
Number of pieces
1
Shape
Disk

☕54mm precision puck screen

🌡️High-temp & acid resistant

🛡️316L stainless steel, ultra durable

¥2890

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

☕ Elevate your espresso ritual — because your coffee deserves precision and perfection!

PRECISION 54 MM FIT - Tailored for Sage Ninja portafilters, ensuring flawless compatibility and a perfect espresso puck every time.
OPTIMAL 150 ΜM FILTRATION - Scientifically designed pore size enhances coffee aroma and extraction uniformity, elevating your espresso game.
PREMIUM 316 L STAINLESS STEEL - Multi-layer sintered metal construction resists heat, acids, and alkalis for long-lasting performance without glue or synthetic materials.
CLEANER MACHINE BETTER SHOTS - Keeps your espresso machine and shower screen spotless by improving water distribution and reducing splashing.
EFFORTLESS MAINTENANCE SUPPORT - Easy to clean puck screen backed by responsive 24-hour customer service for a worry-free coffee ritual.

The NOTSEK Espresso Puck Screen is a 54mm multi-layer sintered 316L stainless steel filter designed for Sage Ninja portafilters. Featuring a 150μm pore size, it optimizes water distribution and extraction for richer, more aromatic espresso. Durable, heat and acid resistant, and easy to clean, it ensures a cleaner machine and consistent coffee puck formation. Comes with dedicated customer support for seamless use.

Specifications

ASIN	B09Z2BF65M
Best Sellers Rank	101,398 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 102 in Reusable Coffee Filters
Brand	NOTSEK
Brand Name	NOTSEK
Compatible Devices	Coffee Maker
Compatible devices	Coffee Maker
Customer Reviews	4.5 out of 5 stars 1,620 Reviews
Global Trade Identification Number	00765154528564
Item Highlight	with Acrylic Storage Box, 150μm, 316L Stainless Steel, Coffee Filter Screen, Lower Shower Screen
Item Shape	Disk
Item Type Name	Puck Screen
Item Weight	28 Grams
Manufacturer	NOTSEK
Manufacturer Part Number	NS-V1PS-54MM
Material	Stainless Steel
Material Type	Stainless Steel
Model Number	NS-V1PS-54MM
Number of Pieces	1
Number of pieces	1
Package Size Name	Single
Shape	Disk
UPC	765154528564
Unit Count	1.0 count
Unit count	1.0 count
coffee_filter_size	#4

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TrustScore 4.5 | 7,300+ reviews

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The product quality is outstanding. Exactly what I needed for my work.

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¥2890

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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1 week ago

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2 days ago

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