5-Pack Silicone Waterproof Gasket Flange Plate – SMA BNC UHF TNC

5-Pack Silicone Waterproof Gasket – Four-Hole Flange Square Plate for RF Connectors

Keep your RF coaxial connector installations sealed and protected with this 5-piece set of silicone waterproof gaskets. Designed as a four-hole flange square plate, these gaskets create a reliable moisture barrier when mounting SL16, UHF, N-type, BNC, SMA, and TNC panel connectors — ideal for amateur radio enclosures, antenna installations, outdoor junction boxes, and electronic project builds.

Key Features

• Universal Compatibility: Fits SL16, UHF, N, BNC, SMA, and TNC connector types for broad versatility.
• Multi-Size Dimensions: Fits flange plates measuring 17.5 mm, 25 mm, and 12.5 mm to suit a wide range of panel cutouts.
• Premium Silicone Material: Flexible, durable silicone construction withstands temperature extremes and resists moisture ingress effectively.
• Four-Hole Flange Design: Square plate profile with four mounting holes ensures a secure, stable seal against panel surfaces.
• Pack of 5: Get five gaskets per order — perfect for multi-connector builds or to keep spares on hand.
• No Assembly Required: Ready to use straight out of the pack — simply position and fasten your connector through the gasket.
• Made in Mainland China.

Specifications

• Material: Silicone
• Plate Dimensions: 17.5 mm / 25 mm / 12.5 mm
• Mounting Holes: 4-hole flange
• Compatible Connectors: SL16, UHF, N, BNC, SMA, TNC
• Quantity: 5 pieces per pack
• Assembly Required: No

What's in the Box?

• 5 × Silicone Waterproof Flange Gasket Square Plates

Perfect For

• Amateur (ham) radio antenna panel installations
• Outdoor weatherproof enclosure connector mounting
• RF coaxial cable routing through junction boxes
• Electronics prototyping and DIY RF project builds

Looking for other storage and organization solutions for your components? Check out our Airtight Transparent PET Storage Bottle for keeping small parts and connectors organized. For precision DIY work, our Leather Hole Punch Tool is a great addition to your workshop toolkit.

Learn more: OSHA on eye and face protection

Frequently Asked Questions

Q: Which RF connector types are compatible with these silicone waterproof gaskets?

A: These silicone flange gaskets are designed to work with SL16, UHF, N-type, BNC, SMA, and TNC panel-mount connectors, making them suitable for a wide range of RF coaxial connector installations.

Q: What sizes are the flange square plates?

A: The gaskets are available in three sizes — 17.5 mm, 25 mm, and 12.5 mm — to accommodate different connector flange dimensions and panel cutout sizes.

Q: Are these gaskets suitable for outdoor use?

A: Yes. Made from durable silicone, these gaskets are designed to withstand outdoor conditions including moisture, temperature changes, and general weathering, making them ideal for outdoor antenna mounts and weatherproof enclosures.

Q: How many gaskets are included in one order?

A: Each order includes 5 silicone waterproof flange gasket square plates, giving you extras for multiple connector installations or future use.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.