Spiral-MAX - 3" x 5" x 3/8" Elliptical Hand Hole Gasket

Spiral-Max boiler gaskets can be made from a wide variety of profiled alloy containment strips combined with specified sealing composites. Following ASME B16.20 code, the strips are wound around a mandrel specific to the finished gaskets internal dimensions. The gasket's inside diameter contains, at a minimum, three plies of preformed metal strip without the sealing composite and is spot-welded at least three times at a distance no greater than 3" apart around the inner circumference.

The sealing material, also in strip form, is introduced and wound together with the profiled alloy to achieve the total width of the gasket. The external layers, up to three plies, are spot-welded circumferentially with a minimum of three welds.

Details:

• 3x5x3/8 elliptical hand hole gasket
• 304 stainless steel profiled containment strips combined with a high purity graphite sealing composite.
• Temperature range in atmosphere: -400° F to 850° F (-240° C to 454° C)
• Temperature range in steam: -400° F to 1200° F (-240° C to 650° C)
• Pressure up to 999 PSI
• pH range: 0-14
• Compressibility: 18-30%
• Recovery: ≤ 17