a substance that is applied to a surface to prevent the passage of air or liquid through it, typically as a coating or patching material, a tool or device used to seal something, especially an envelope or container

concrete sealer, jar sealer, envelope sealer

Formal and Informal Expressions of sealer

In different contexts, you can replace 'sealer' with suitable alternatives. In a more formal setting, 'coating, substance' is apt. In informal speech or writing, 'sticky stuff, tape' is a commonplace synonym.

sealer: Explore its Definition & Usage

sealer Definition

1a substance that is applied to a surface to prevent the passage of air or liquid through it, typically as a coating or patching material
2a tool or device used to seal something, especially an envelope or container

Using sealer: Examples

Take a moment to familiarize yourself with how "sealer" can be used in various situations through the following examples!

Example
The sealer was applied to the roof to prevent leaks.
Example
I need a sealer to close this envelope.
Example
The sealer on the paint protects it from moisture and dirt.

sealer Synonyms and Antonyms

Synonyms for sealer

Phrases with sealer

concrete sealer
a protective coating applied to concrete surfaces to prevent water penetration, staining, and corrosion
Example
The concrete sealer was applied to the garage floor to protect it from oil stains.
jar sealer
a device used to vacuum-seal jars to preserve food
Example
The jar sealer was used to preserve the homemade jam.
envelope sealer
a tool used to moisten and seal envelopes
Example
The envelope sealer made it easy to send out all the invitations.

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Summary: sealer in Brief

A 'sealer' [ˈsiːlə(r)] is a substance or tool used to prevent the passage of air or liquid through a surface. It can be applied as a coating or used to seal envelopes or containers. Examples include concrete sealer, jar sealer, and envelope sealer.