What is the diameter of the gasket?

Agreed, 2 3/8 and fits the hydro flask wide mouth lids (flip and standard) perfectly, seals completely

Just post the flippin dimensions!!!! Inner diameter, outer diameter, thickness if it is a flat ring or state that has a round cross-section. Get the s

Hello, here's the size of our O rings. Thickness：0.4mm; Outer Diameter: 2.03 inches; Inner Diameter: 2 inches;

Will this fit the 40 oz HydroFlask?

Dear Yes！It fits all sizes hydro flask wide mouth lids (flip and standard) perfectly. Thank you!

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💧 Seal the deal with Greant – never let a drip cramp your style!

EASY MAINTENANCE - Dishwasher and microwave safe, making cleaning and daily use effortless for your busy lifestyle.
PERFECT COMPATIBILITY - Specifically engineered for Hydro Flask wide mouth flex caps (20oz to 64oz) and straw caps, ensuring a flawless fit every time.
TRUSTED BRAND QUALITY - Produced by Greant, a professional manufacturer dedicated to premium water bottle accessories designed to extend your Hydro Flask’s lifespan.
VALUE PACKED CONVENIENCE - Includes 6 replacement O-rings plus a bonus silicone coaster—save money and avoid buying new lids or bottles.
DURABLE SILICONE MATERIAL - Crafted from high-quality silicone for long-lasting, flexible, and strong seals that prevent leaks and maintain freshness.

The Greant 6 PCS O Ring set offers a perfect, leak-proof silicone seal replacement for Hydro Flask wide mouth flex and straw caps (20oz to 64oz). This value pack includes six durable, dishwasher-safe gaskets plus a silicone coaster, designed to extend the life of your Hydro Flask without the need for costly lid or bottle replacements.

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Material	Silicone
Color	Clear
Brand	Greant
Style	Fit Hydroflask Wide Flex Cap
Product Dimensions	2.56"L x 0.47"W
Item Weight	9.07 g
Shape	Round
Number of Pieces	6
Is Dishwasher Safe	Yes
Is Microwaveable	Yes
Manufacturer	Greant
Item Package Dimensions L x W x H	2.6 x 2.56 x 0.47 inches
Package Weight	0.01 Kilograms
Item Dimensions LxWxH	2.56 x 0.47 x 2.6 inches
Brand Name	Greant
Number of Items	6

Greant 6 PCS O Ring for HydroFlask Wide Mouth Lid, 2'' to 2.3'' Rubber Seal for Hydro Flask Lid, fit Hydroflask Gasket Replacement, 3 Sizes for Different Lids

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