mine are tight, tight.. can they be stretched?

Agreed. too tight!!!. I have had no luck stretching them. Maybe hot water or dishwasher with heat??? however, might warp.

Will these fit on Luminarc 3L mason jars?

These lids fit the Luminarc working glasses both 14 oz and 21 oz glasses. If your mason jar also is 3-3/4" from edge to edge, it may fit.

do they fit Amazon glasses?

These fit perfectly on my working glass containers. I put them in the freezer as

do these fit on oui glass yogurt containers?

I'm not sure...but I have bought oui yogurt and these seem too wide. I use them with french cups marked "500". They are 3 3/4" across the top. They fit perfect.

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Mian Red Plastic Lids fits Luminarc Working Glass 6 Pack

Product ID: 115109439

Details

Brand
Mian
Color
Red
Material
Plastic
Product Dimensions
3.93"L x
Style
Jar

📚Grooved stacking design

🔴Precise 3.75" fit

🛡️Snap-tight secure seal

S$22

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔴 Seal it. Stack it. Style it. Own your kitchen game.

SNAP ON SECURITY - Tight-fitting lids that lock in freshness and prevent spills, keeping your drinks and dips pristine.
STACK LIKE A PRO - Grooved lids enable stable stacking, maximizing your kitchen space and elevating your organization game.
FAMILY OWNED QUALITY - Crafted by Mian, a trusted American family business, ensuring reliability and care in every pack.
PERFECT PRECISION FIT - Exclusively designed for Luminarc Working Glass jars with a 3.75" diameter—no slipping, no guessing.
VIBRANT RED STATEMENT - Bold red lids add a pop of color to your storage, making your kitchen as stylish as your lifestyle.

Mian Red Plastic Lids come in a 6-pack, designed exclusively to fit Luminarc Working Glass jars with a 3.75" outside diameter. These snap-on lids provide a secure, spill-proof seal for drinks, dips, and more, featuring grooved tops for easy stacking. Made from durable plastic by a family-owned American brand, they combine practical functionality with a vibrant red finish to enhance your kitchen storage experience.

Specifications

ASIN	B0759S6XQ2
Best Sellers Rank	#205,640 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #867 in Canning Lids
Brand	Mian
Brand Name	Mian
Closure Type	Snap
Color	Red
Customer Reviews	4.1 out of 5 stars 466 Reviews
Item Dimensions L x W	3.93"L x 3.93"W
Item Highlight	These lids will only fit jars that measure 3.75" (9.5cm) outside diameter
Item Weight	1.92 ounces
Manufacturer	Mian
Material	Plastic
Material Type	Plastic
Number of Pieces	6
Product Dimensions	3.93"L x 3.93"W
Product Style	Jar
Shape	Round
Style	Jar
UPC	744539810043
Unit Count	6 Count

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