No. 12 x 5/8-in Perma-Seal Neo/Bonded Sealing Washer - 100 Count

Sealed Fastener Points for Damp Growing Spaces - 100 Washers

Screw holes in greenhouse panels, mounting rails and equipment frames let moisture in, and humid cultivation spaces make that worse. A sealing washer sits under the fastener head and helps close that gap. These Perma-Seal Neo/Bonded washers in No. 12 x 5/8-in give you a ready supply for the job.

One unit holds 100 washers. That suits a hobbyist finishing a single structure and a regular indoor grower who keeps spares for repairs. Larger operations can order several units for bigger builds.

Key Features & Benefits

• Sealing washer design — helps close the gap around a fastener head.
• Neo/Bonded construction — pairs a sealing layer with the washer for use under screw heads.
• No. 12 x 5/8-in size — a defined size makes it easier to match your hardware.
• 100 Count — one unit covers many fastening points.

Who Should Use No. 12 x 5/8-in Neo/Bonded Sealing Washers

Use them if you assemble or maintain greenhouse structures, grow rooms, racking or hydroponic system frames where fasteners meet moisture. They suit home gardeners and licensed commercial growers alike.

About Perma-Seal Neo/Bonded Sealing Washers

The distributor lists this product as a Perma-Seal Sealing Washer in No. 12 x 5/8-in, with 100 washers per unit. The unit is sold each. The manufacturer is not stated here.

Frequently Asked Questions

Q: How many washers come in one unit?
A: One unit contains 100 washers. It is sold each, so you order one unit to receive all 100.

Q: What does a sealing washer do?
A: It sits under a fastener head and helps close the gap around the hole. This limits moisture getting past the fastener.

Q: Does a sealing washer replace a regular flat washer?
A: It serves a different purpose. A flat washer spreads load, while a sealing washer is chosen to help seal the joint. Pick based on whether moisture is the concern.

Q: What does Neo/Bonded mean?
A: It refers to the washer's bonded sealing construction, as the distributor names it. Check the supplier documentation if you need material details.

Q: Will these fit my screws?
A: They are listed as No. 12 x 5/8-in. Compare that size with your fasteners before you order.