BS&B Safety Systems 21006317-2 Rupture Disc 3 Inch DN80 EPDM-B 316L

BS&B Safety Systems' 3-inch (DN80) GCR-S rupture disk, part number 21006317-2, combines a 316L stainless steel body with an EPDM-B gasket to deliver reliable overpressure relief in process lines. The GCR-S series is a reverse-buckling disk designed for both gas and liquid service and is intended for installation between BS&B GR-C safety heads or FM-C/FT-C disk holders to ensure proper orientation and leak-tight performance. Available in 1.5–4 inch sizes, the GCR-S family covers a broad burst-pressure range (approximately 10–300 psi, or 0.7–20.7 bar) depending on disk size, with the 3-inch variant falling within that spectrum. FDA-approved gasket options include EPDM, which aligns with the EPDM-B designation for this model. The disk employs SAF Technology (Structural Apex Forming) to promote predictable failure and minimize fragmentation at the marked burst pressure, while the 316L stainless steel construction provides compatibility with a wide range of process fluids and environments. This combination makes the 3" GCR-S rupture disk an appropriate choice for protecting equipment and piping in sanitary or industrial applications where durable metal construction and a reliable rupture-point are essential.