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Polyethylene -06 SAE (5/8-18) Protective Threaded Cap for Flared Fittings

Description & Features

The Polyethylene -06 SAE (5/8-18) Protective Threaded Cap for Flared Fittings is engineered to safeguard your industrial assemblies efficiently. Constructed from high-quality polyethylene, this cap ensures robust performance under various conditions.

Designed specifically for -06 SAE threads, the 5/8-18 thread size enables secure and reliable fitting, minimizing the risk of contaminants. Its threaded design caters to flared fittings, offering comprehensive protection against mechanical impacts and environmental elements.

This cap is produced by Essentra Plastics, a trusted name synonymous with durability and dependability in protective closures. Suitable for a broad range of industrial settings, this protective threaded cap is an essential component for maintaining the integrity of your flared fittings.

MPN: C1EJ53

Supplier Part Number: G-9

Specifications

Brand ESSENTRA COMPONENTS	Color Blue	Material LDPE	Suitable For Use With #06 SAE Flared Fittings	Thread Sealant Without Thread Sealant	Thread Size 5/8-18

Product Questions & Answers (3)

Question by: Cindy H on Jun 19, 2025, 2:05 PM

got a -06 SAE flare fitting with 5/8-18 threads. is this the right cap to screw on and keep the threads clean?

Answer by: Customer Support on Jun 21, 2025, 7:56 AM

For a -06 SAE flared fitting that uses 5/8-18 threads, this cap is the matching size. It threads on as a protective closure to cover and protect those flare fitting threads.

Question by: Rod B on Mar 10, 2026, 9:19 PM

Will this cap keep dirt and stuff out of my fittings while I'm working on my equipment?

Answer by: Customer Support on Mar 12, 2026, 7:46 AM

Absolutely, this polyethylene cap is designed to provide robust protection against contaminants. It's threaded to fit securely and keep your flared fittings clean.

Question by: Rod C on Oct 15, 2025, 6:08 PM

these fit standard -06 SAE flared fittings or is there a specific type they work with?

Answer by: Customer Support on Oct 17, 2025, 1:11 PM

Flared fittings with a 5/8-18 thread size are what these caps are built for. The -06 SAE designation covers that exact thread, so as long as your fitting matches that spec, you should be good to go. They thread on securely to keep contaminants and mechanical damage from getting to the fitting face while it's not in service.