The Safeseal Type SB2A is a dual-cartridge seal. Its double-balanced design ensures the reliability and longevity of the seal in the most demanding conditions. The Type SB2A seal is ideal for use with environmentally hazardous and abrasive fluids, most often used in pumps in pulp mills, minerals processing and other slurry duties up to 40% solids by weight and a solids hardness of 8 Mohs. The Type SB2A seal is widely used with other process equipment including agitators.
Several variants of the design available for different services:
Type SB2 — designed for DIN standard dimensions
Type SB2A-PR — designed for ANSI standard dimensions, including integrated pumping device
Type SB2B — designed for big bore dimensions
Type SB2B-PR — designed for big bore back plate dimensions
Type SB2S — designed for special dimensions, including metric sizes
Type SB2S-PR — designed for special dimensions, including integrated pumping device
Process pressure: 290 psi(g)/20 bar(g)
Barrier fluid: 215 psi(g)/15 bar(g)
Seal faces: SiC/Carbon or SiC/SiC
O-rings: PTFE, EPDM, Viton, FFKM
Metals: AISI 329 and 316 standard, titanium, Hastelloy, UHB, 904, SAF 2507 for sea water applications
Springs: Nimonic steel
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