Conical seals are essential for reliable, leak-free connections in AN fittings and related hydraulic or fuel line applications. This guide highlights top conical seal options from trusted brands, focusing on installation ease, durability, and compatibility with 37° flare fittings. Each product below includes practical features to help you choose seals designed for performance in automotive, marine, and hydraulic systems.
| Product | Brand | Key Features |
|---|---|---|
| XRP 820110 Flare Conical Seal | XRP | Aluminum, 4 piece, flare conical seal |
| Earl’s 169106ERL Conical Seal Package of 4 Size 6 | Earl’s | Easily installed; for 37° adapter cones & seats; for damaged hose ends |
| Earl’s 169101ERL Conical Seal | Earl’s | Easily installed; for 37° adapter cones & seats; for damaged hose ends |
| SOMATHERM FOR YOU, Distribution manifold 3 conical Easy Lock | SOMATHERM FOR YOU | Nickel-plated brass, self-sealing, 3 male 3/4″ branches, bypass-ready |
| Aocies 16435 RV Plastic Santoprene Swivel Seal | Aocies | 1/2″ PEX swivel seal; pack of 8; easy installation |
XRP 820110 Flare Conical Seal

The XRP 820110 Flare Conical Seal is designed for aluminum flare fittings, offering a compact four-piece set that accommodates standard flare connections. Its conical seal geometry helps achieve a tight, leak-resistant interface when mated with corresponding AN and hydraulic components. Suitable for aftermarket repairs or upgrades in automotive and marine systems, this seal set emphasizes ease of installation and consistent performance in sealed fluid paths. Material is optimized for light-to-medium-duty applications where precise sealing under vibrational loads is important.
Earl’s 169106ERL Conical Seal Package of 4 Size 6

This Earl’s conical seal pack includes four seals sized for 6 (likely AN size references) and is described as easily installed with compatibility for 37° adapter fitting cones and seats. The design focuses on replacing damaged hose ends and restoring a reliable seal path in curved or tight routing areas. As with similar conical seals, the material and surface finish contribute to resistance against leaks, vibration, and wear over time, supporting a steady sealing performance in high-need environments.
Earl’s 169101ERL Conical Seal

The Earl’s 169101ERL conical seal mirrors the installation ease and compatibility of its sibling in the same product line. It’s positioned for straightforward replacement in 37° adapter cone and seat assemblies and is suitable for addressing leaks at damaged hose ends. This option is a practical choice when upgrading seals in performance-oriented fuel, oil, or hydraulic lines where reliable seating and quick installation are valued.
SOMATHERM FOR YOU Distribution Manifold

The SOMATHERM FOR YOU distribution manifold features three conical Easy Lock seals integrated into a nickel-plated brass sanitary manifold. The design focuses on durability and corrosion resistance, with a self-sealing system intended to deliver leak-free connections. The manifold’s precise alignment reduces pipe stress, helping maintain integrity across multiple connections. The 40 mm branch spacing supports flexible installation in sanitary or heating systems, making it a robust choice for environments requiring reliable water or thermal distribution with conical sealing interfaces.
Aocies 16435 RV Plastic Santoprene Swivel Seal

The Aocies 16435 RV plastic Santoprene swivel seal is designed for 1/2″ PEX fittings, offering a pack of eight gaskets suitable for RV water lines. The swivel seal concept aligns with conical sealing principles by ensuring a tight, easy-to-install connection that resists leaks in mobile environments. The Santoprene material provides flexibility and resilience against common RV plumbing stresses, making these seals a practical spare or replacement option for RV repair and maintenance projects.
Buying Guide: Key Purchase Considerations
- Compatibility: Confirm the seal size and cone angle (e.g., 37°) to match your AN or flare fittings. Using the correct size is critical for achieving a proper seal.
- Material and corrosion resistance: Aluminum, nickel-plated brass, and Santoprene each offer different durability profiles. Choose based on fluid type, temperature, and exposure to corrosive elements.
- Installation ease: Look for seals advertised as easily installed, with straightforward seating, to reduce labor and risk of misalignment during assembly.
- Leak prevention: Self-sealing designs and precise alignment help minimize leaks. Consider seals that maintain performance under vibration and pressure fluctuations common in automotive and marine systems.
- System context: For sanitary or heating installations, nickel-plated brass manifolds and multi-seal configurations can provide integrated sealing and distribution benefits, whereas standalone conical seals are often best for immediate hose-to-fitting connections.
- Spare availability: Packs of multiple seals or gaskets offer ready replacements for ongoing maintenance and repairs, reducing downtime.
- Brand and warranty: Reputable brands with clear installation guidelines and warranty coverage can offer greater confidence in long-term performance.