ELASTOMER DIAPHRAGM SEALS

Technical features

• Unbalanced
• Single spring
• Bi-directional
• Elastomer diaphragm
• Thin cross-section versions available as YT824/843
• Double seal version available as YT828

Operating limits

• d1 = 10 – 100 mm, 0.375” – 4.000”
• p1 = 1.6 MPa
• t = -35 – 160 °C
• vg = 15 m/s

Materials

• Rotary faces: carbon graphite, silicon carbide, tungsten carbide • Stationary seats: alumina ceramic, silicon carbide, tungsten carbide • Bellows, secondary seals: CR, EPDM, FPM, FEPM, HNBR, NBR • Springs, other matel components: AISI 304, 316

Stationary seats

• YT820/802L: CS3 (standard) • YT821/828/843/843L: CS2 (standard), OS1 • YT824: CS1 (standard), LS3, LS4 • see page 47 for other cup mounted and O-ring mounted seats