6 Inch Red Rubber Gasket 150 LB Full Face

The 150 LB designation refers to ASME/ANSI Class 150 flange pressure ratings. For a 6-inch flange, this typically corresponds to working pressures up to approximately 285 PSI at ambient temperatures. As temperature increases, the allowable working pressure decreases. Always confirm your specific system pressure and temperature conditions before installation.

Red rubber gaskets are manufactured from SBR (Styrene-Butadiene Rubber), a general-purpose elastomer known for good compressibility and water resistance. They are best suited for low-pressure water, steam, and plumbing applications. Red rubber is not recommended for oil, fuel, or hydrocarbon service, where materials like NBR or FKM/Viton would be more appropriate.

A standard 6-inch ANSI 150 LB full-face gasket typically has an outer diameter matching the flange OD (approximately 11 inches), an inner diameter matching the pipe bore (approximately 6.625 inches), with bolt holes at the standard bolt circle diameter. Thickness is commonly 1/16 inch or 1/8 inch. Always verify dimensions against the applicable ASME B16.21 standard.

Yes. Detroit Sealing Components maintains over 8,000 tooled articles and offers custom gasket design and development using compression, transfer, and injection molding. Materials including EPDM, NBR, and FKM/Viton are available. Custom geometries and specialty compounds can be developed with support from our ISO 17025 accredited lab and application engineering team.

Standard SBR red rubber gaskets may not meet potable water certifications such as NSF 61 or FDA CFR 177.2600. Detroit Sealing Components also offers specialized sanitary and drinking water seals certified to NSF 61, NSF 42, WRAS, and other international standards. For drinking water systems, always specify a certified-compliant material to meet regulatory requirements.

Six-inch full-face rubber gaskets are widely used across water treatment and distribution, municipal plumbing, HVAC systems, general industrial piping, wastewater management, agricultural irrigation, and food and beverage processing facilities. Their versatility in low-to-medium pressure flange connections makes them a standard component in any fluid handling infrastructure requiring a reliable, cost-effective seal.