John C r a n e O f f e rs F r e e Brochure On End F a c e Shaft Seals
End face shaft seals used in original equipment are described in a new, colorful brochure prepared by John Crane, one of the world's largest manufacturers of engineered sealing systems.
Designated as John Crane Type 1 and Type 2 Series, these seals are used in all types of rotary shaft equipment—pumps, mixers, blenders, agitators and compressors. Type 1 and Type 2 seals have been used in original equipment for more than 40 years.
They are self-aligning seals, adjusting automatically to compensate for abnormal shaft end play, primary sealing wear, and machinery tolerances. They are designed for field repair to minimize replacement costs and production downtime.
Components include a non-clogging, single coil spring for greater dependability, and flexible elastomer bellows. Standard bellows materials used include neoprene, buna, DuPont viton and ethylene propylene, with optional bellows available in kalrez and radiation resistant rubber. Temperature ranges for these John Crane Seals are minus 40° F to plus 550° F. They function in operational pressures to 1,200 psi and static pressures to 2,000 psi. They cover a wide range of service conditions from water and steam to corrosives and abrasive fluids.
For a free copy of John Crane's Bulletin No. S-2003-5 on Type 1 and Type 2 end face shaft seals,