100ft 3/4ft Flexible Gas Line CSST Corrugated Stainless Steel Tubing

Our review of this 100ft 3/4' flexible gas line finds it best suited for homeowners and contractors who need a long, high-capacity run for natural gas or propane appliances; the single biggest reason to buy is the combination of a 100ft length and a 3/4' bore that can deliver up to 150,000 BTU/hour, which makes it useful for longer runs or larger equipment that smaller hoses cannot feed. The tubing's corrugated stainless steel core and yellow UV-resistant jacket make it a practical, flexible alternative to rigid pipe when routing through attics, basements, or around obstacles.

Key Features

• 100ft length: Provides a long continuous run so fewer joints are needed and installations across larger distances are simpler.
• 3/4' bore capacity: The 0.63' inner diameter supports up to 150,000 BTU/hour, suitable for larger appliances and combined loads.
• Corrugated stainless core: Made from SUS304 stainless steel for corrosion resistance and reliable flow inside the tubing.
• Flexible installation: The corrugated design allows the line to be cut to length and to snake around corners, reducing the need for extra fittings.
• UV-resistant jacket: The 0.079' yellow polyethylene jacket resists sunlight exposure when routed in exposed spaces.
• One-piece construction: The single molded body reduces intermediate interfaces, lowering potential leak points when installed correctly.

Who It's For

This product is aimed at DIYers, builders, and HVAC or plumbing professionals who need a long flexible gas supply line for natural gas or propane applications such as grills, fire pits, ranges, or water heaters. It is especially useful where rigid pipe would be difficult to route or would require multiple fittings.

Those who should look elsewhere include users who require pre-terminated assemblies with industry-specific fittings, or projects that demand burial without conduit; the tubing must not be buried directly without a protected non-metallic conduit at least 12' larger than the outer diameter, and some customers reported compatibility issues with certain fittings.

Pros & Cons

Pros

• High flow capacity for larger appliances due to the 3/4' inner diameter.
• Flexible corrugated stainless core that is easy to cut and route in tight spaces.
• Corrosion-resistant SUS304 inside and a UV-resistant jacket for durability in exposed runs.
• Long 100ft length reduces the need for additional joins and fittings.

Cons

• Some customers found the overall size smaller than expected and reported compatibility issues with standard fittings, so verify connector sizes before purchase.
• Not suitable for direct burial without a protective conduit, which adds complexity and cost for underground runs.

Specifications

Our Verdict

For installations that need a long, flexible run with strong flow capacity, this 100ft 3/4' CSST tubing is a practical and cost-effective choice because of its durable SUS304 core, flexible routing, and high BTU capacity. Buyers should confirm fitting compatibility and plan for conduit if routing underground, but for most exposed or indoor runs it represents solid value for larger appliance connections.

Frequently Asked Questions

Can this tubing be used for buried installations?
No. The tubing must not be buried directly; to route underground it requires a non-metallic water-tight conduit at least 12' larger than the outer diameter.

What gases is this compatible with?
It is intended for natural gas and liquid propane applications such as grills, fire pits, ranges, and water heaters.

Are fittings included and do they always fit?
Two male adapter fittings are included, but some customers reported compatibility issues with industry standard fittings, so verify connector sizes before installation.