Cartridges & Mechanical Seals

32 SECTORS: LDC21 CHARACTERISTICS: • Balanced. • Multispring. • Not dependent on the rotation direction. • Barrier fluid connections. OPERATING LIMITS: d 1 = 25 ÷ 120 mm p= 20 kg/cm ² v= 20 m/s t= -15÷ +200oC ( *) (*) The temperature resistance depends on the mate- rial of the secondary seals used. The operating limits are defined by the PV factor which is determined for the sealing system characteristics and those of the application. DESCRIPTION: A double cartridge seal with a “back to back” arran- gement which permits operation with barrier fluids in excessive pressure conditions with respect to the wor- king fluid (P1 + 1.5 ~ 2 kg/cm2). For this reason it is advisable to install it in applications with toxic, contaminant or potentially dangerous fluids in where safety is an important factor. CONNECTIONS (R): 3/8" NPT. For 25, 28 and 30 mm shafts the connections are at opposite sides of the flange. COMPONENTS: 1p Stationary contact surface product side 2p Rotating contact surface product side 1a Rotating contact surface atmospheric side 2a Stationary contact surface atmospheric side 3 O-rings 4 Springs 5 Set screws 6 Sleeve 7 Flange 8 Setting clips 9 Flat gasket 10 Drive ring