BSS (Cartridge Mounted Balanced Single Spring Seal)

The SEPCO BSS is a rotary designed, balanced, single spring seal capable of handling higher operating pressures than conventional unbalanced single spring designs. Large coil springs are resistant to clogging and allow the BSS to operate successfully in equipment with end play to 1/8″.

Fits Narrow Stuffing Boxes: Seal sizes 1″ through 1 3/8″ (inclusive) require a 5/16″ cross section, and sized 1 1/2″ through 2 5/8″ (inclusive) require a 3 /8″ cross section.

Slotted Glands: The BSS design features a slotted gland that offers more versatility with bolting patterns.

Impeller Adjustments in Service: Disassembling the pump is unnecessary to make impeller clearance adjustments.

Cartridge Mounted: The seal is pre-formed at the factory, mounted on its sleeve and installed in the gland for easy installation.

No Installation Measurements: Mechanics are not required to make critical installation measurements in order to install the seal.

No Shaft Fretting Wear: No shaft fretting wear occurs because the O-ring on the shaft is static and does not move.

Metal Parts:
Standard Metal Parts: 316 SS

Face Materials:
Rotary Face
High quality carbon / graphite
Stationary Seat Ring
Silicon carbide

Secondary Seals:
Aflas

Pressures: To 350 p.s.i. (g)

Shaft Speeds: 1800 ft/min.

Temperatures: To 400°F / 204°C