Seals

Seals provide secure, long-lasting protection for electronic assemblies, preventing dust, moisture, and environmental contaminants from affecting performance. This category includes gaskets for enclosures and O-rings for fittings, helping maintain reliable operation across industrial, automotive, and electronic systems.

Online Components stocks more than 260 seals from over 25 authorized suppliers, including Sealcon, TE Connectivity, Hubbell, Molex/Woodhead, and nVent Schroff. With U.S.-based inventory, competitive pricing, and fast global shipping, you can source high-quality seals with confidence.

How to Choose the Right Seal

Seal Type

Gaskets are ideal for protecting flat panels and enclosures, helping to maintain consistent compression across large surfaces. O-rings are best suited for cylindrical fittings and electrical connectors where a reliable, airtight seal is required.

Material

Options such as Buna-N, silicone, and fluorosilicone each provide different benefits: oil and fuel resistance, broad temperature tolerance, or superior chemical durability. Selecting the right compound ensures the seal performs reliably in its intended environment.

Application Requirements

Always confirm dimensions, compression ratings, and IP (Ingress Protection) standards before selecting a seal. Matching these specifications to your design helps maintain compliance, extend component life, and prevent costly failures in the field.

Popular Applications for Seals

• Enclosures & Panels: Gaskets maintaining IP-rated seals in cabinets and housings.
• Connectors & Fittings: O-rings ensure tight, moisture-resistant mating in electrical connectors.
• Industrial Equipment: Seals protecting sensitive electronics in harsh factory environments.
• Automotive & Transport: Heat- and vibration-resistant O-rings and gaskets in control modules.
• Aerospace & Defense: High-spec seals where reliability in extreme conditions is critical.

Why Buy Seals from Online Components?

• Authorized Distributor Since 1999: Genuine, traceable supply from trusted suppliers.
• Wide Selection: 260+ gasket and O-ring SKUs available.
• Fast Fulfillment: Same-day U.S. shipping and predictable global flat-rate delivery.
• Competitive Pricing: Screen pricing and low minimum order quantities to support both prototyping and production.
• Easy Ordering: Our search lets you filter by size, material, or supplier.

Electronics Seals: What You Should Know

How do I select the right seal for electronic components?

Start with dimensions and profile (O-ring vs. gasket), then confirm material properties such as temperature range, chemical resistance, and compression set. Always match the enclosure or connector specifications.

Which materials are most commonly used for electronic seals?

Buna-N is widely used for oil and fuel resistance, silicone offers broad temperature stability, and fluorosilicone excels in harsh chemical or aerospace environments. Each has trade-offs in cost and performance.

Do seals impact enclosure IP ratings?

Yes. Properly sized gaskets and O-rings are critical for maintaining IP-rated dust and moisture protection. A mismatched seal can reduce compliance and compromise long-term reliability.