Features
API 682 Category 2 and 3, Type A,
Arrangement 1 seal
Single seal
Balanced
Cartridge unit
Stationary multiple springs
Solid seal faces
Operating range
Pressure (product seal): p = vacuum ... 60 bar ( 870 PSI)
Temperature: -40 °C +176 °C (-40 °F +349 °F)*
Sliding velocity: vg = 50 m/s (164 ft/s)
Viscosity: ... 300 mPa·s
Solids content: ... 0.5 wt.%
* Engineered up to 260 °C (500 °F) with FFKM (K) secondary seals
Materials
Seal ring: Blister resistant carbon,
Silicon carbide SSiC (Q1), RBSiC (Q2)
Mating ring:
Silicon carbide SSiC (Q1), RBSiC (Q2)
Secondary seals:
FKM (V), FFKM (K), EPDM (E), NBR (P)
Springs: Hastelloy® C-276 (M5)
Metal parts: CrNiMo steel 316 (G)
Recommended applications
Oil and gas industry
Power plant technology
Light volatile hydrocarbons
LPG plants
API 610 / ISO 13709 pumps
Process pumps
Recommended piping plans
Process side:
01, 02, 11, 12, 13, 14, 21, 22, 23, 31, 32, 41
Atmospheric side:
51, 61, 62, 65A, 65B, 66A, 66B
Advantages
Suitable for higher speeds
Good followability due to no influence from
run-out, squareness or vibration of the shaft
Compact design
Low heat generation and power consumption
due to narrow seal face width
Longer seal life
Pressure-balanced design prevents mating
ring being forced out under reverse pressure
No damage to shaft sleeve as dynamic
O-Ring is not in direct contact with the sleeve