Sealer

A 'sealer' is a substance or device used to create a hermetic or protective barrier, preventing the passage of air, moisture, or other substances. This action aims to preserve, protect, or prevent unwanted interaction with a surface or enclosed space. Sealers come in various forms, including liquids (paints, varnishes), pastes (caulk, putty), tapes, and mechanical devices. Their application can be diverse, ranging from sealing food containers to protecting wood from water damage, or creating airtight environments. Essentially, a sealer's primary function is to establish an impenetrable or resistant boundary.

Sealer meaning with examples

• The carpenter applied a wood sealer to the deck to protect it from rain and sun exposure, extending its lifespan. This liquid substance soaked into the wood grain, creating a resilient shield against weathering, crucial for outdoor structures. He carefully brushed it on, ensuring complete coverage and allowing it to dry thoroughly before adding the protective stain, preserving the wood.
• Before applying the sealant, she prepped the old concrete driveway, making sure it was clean and dry. The sealant acted as a surface sealer, filling tiny pores to deter water penetration and frost damage, reducing the need for major repairs. Its application was carefully applied to seal and create a water-resistant surface, which would safeguard against deterioration.
• After preparing the canvas, the artist used a primer sealer to ready it for the next stage. It acted as a barrier between the canvas and the paint. The application ensures optimal paint adhesion and prevents the pigment from sinking into the fabric, which affects the appearance of the artwork. The sealer was crucial for producing the painting's longevity.
• During the canning process, the automated machines ensured each jar had a reliable airtight sealer. It's a crucial step to keep food fresh and safe for consumption. If the lids were not properly sealed, spoilage and the potential for harmful bacteria to thrive. Ensuring the jars contained an effective seal was vital for preserving the food.
• The HVAC technician utilized a duct sealer to prevent air leaks in the ventilation system. This sealant, applied around the duct connections, ensured maximum efficiency of the air conditioning and heating units by preventing the escape of conditioned air. With a proper sealer, the HVAC system performed well, conserving energy and lowering energy costs.