Asc 25C.WF100 Corrugated Ss Tubing 1 in 100 Ft Black Csst

Product Description

The ASC Engineered Solutions 25C.WF100 is a corrugated stainless steel tubing (CSST) assembly used for flexible gas piping in residential and commercial applications. Manufactured from 304 stainless steel with a black jacket, it comes in a 100-foot length at a 1-inch nominal diameter. Licensed plumbing and gas piping contractors install this product as part of interior gas distribution systems. It carries certifications from ANSI LC1, ASTM A240/E84, CSA 112940, IAPMO 3353, ICC ESR-1879, and UL R18357, confirming compliance with major North American gas piping standards. This is a domestically manufactured product intended for professional installation by qualified trades.

CSST like the 25C.WF100 is used in residential and light commercial gas distribution systems to connect a main rigid gas line to appliances such as furnaces, boilers, water heaters, dryers, and ranges. The flexible corrugated design allows routing through walls, floors, and framing without the need for multiple rigid fittings. It is suited for new construction and retrofit installations where rigid black iron pipe is impractical. The black jacket provides additional protection and identification in the field.

Key Features

• 304 stainless steel corrugated construction provides durability and corrosion resistance in gas service
• 1-inch nominal diameter and 100-foot coil length for extended runs with minimal joints
• Black jacket for easy identification and surface protection
• Certified to ANSI LC1, ASTM A240/E84, CSA 112940, IAPMO 3353, ICC ESR-1879, and UL R18357
• Domestically manufactured for traceability and code compliance documentation
• Flexible corrugated profile simplifies routing through structural framing and tight spaces

Compatibility

Designed as an OEM-style flexible gas piping solution for residential and commercial natural gas and propane distribution systems where CSST is permitted by the local authority having jurisdiction.

Installation Notes

CSST gas piping must be installed by a licensed plumber or gas fitter in accordance with the International Fuel Gas Code (IFGC), local amendments, and the manufacturer installation instructions. Shut off the gas supply and verify zero pressure at the line before making any connections or modifications. Bonding and grounding requirements for CSST vary by jurisdiction and code cycle — verify local requirements before installation. Do not use pipe dope or thread sealants not rated for CSST fittings.

Technical Specifications

• Material: 304 Stainless Steel
• Jacket Color: Black
• Nominal Diameter: 1 inch
• Length: 1200 inches (100 ft)
• Certifications: ANSI LC1, ASTM A240/E84, CSA 112940, IAPMO 3353, ICC ESR-1879, UL R18357
• Country of Origin: Domestic (USA)

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 25C.WF100