Grundfos NB Series - Page 10

10
Mechanical shaft seal
* –25°C to 60°C
Shaft seal diameter [mm] 28, 38 48 55 60
Code
Temperature
range
Maximum pressure [bar]
Rubber bellows seal, metal-impregnated carbon/silicon carbide,
EPDM
BAQE 0°C to +120°C 16 16 16 16
Rubber bellows seal, metal-impregnated carbon/silicon carbide,
FKM
BAQV 0°C to +90°C 16 16 16 16
Rubber bellows seal, silicon carbide/silicon carbide, EPDM BQQE 0°C to +90°C 16 16 16 16
Rubber bellows seal, silicon carbide/silicon carbide, FKM BQQV 0°C to +90°C 16 16 16 16
Bellow seal, type B, with reduced seal faces, silicon carbide/
silicon carbide, EPDM
GQQE –25°C to +90°C 16 16* 16* 16*
Bellow seal, type B, with reduced seal faces, silicon carbide/
silicon carbide, FKM
GQQV –20°C to +90°C 16 16* 16* 16*
O-ring seal with fixed seal driver, silicon carbide/silicon carbide,
EPDM
AQQE 0°C to +90°C 25 25 16 16
O-ring seal with fixed seal driver, silicon carbide/silicon carbide,
FKM
AQQV 0°C to +90°C 25 25 16 16
O-ring seal with fixed seal driver, silicon carbide/metal-impregnated
carbon, EPDM
AQAE 0°C to +120°C 25 25 25 25
O-ring seal with fixed seal driver, silicon carbide/metal-impregnated
carbon, FKM
AQAV 0°C to +90°C 25 25 25 25
Rubber bellows seal, silicon carbide/synthetic resin-impregnated
carbon, EPDM
BQBE 0°C to +140°C 16 - - -
O-ring seal, balanced, metal-impregnated carbon/silicon carbide,
FXM
DAQF 0°C to +140°C 25 25 25 25
Rubber bellows seal, synthetic resin-impregnated carbon/silicon
carbide, EPDM
BBQE 0°C to +120°C 16 16 16 16