LL9UC
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LL9UC

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LL9UC
LL9UC
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Technical drawing of LL9UC

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Item Description
1.1 Seal ring
1.2, 1.6, 3, 4, 6 O-Ring
1.3 Spring
1.4 Thrust ring
1.5 Drive screw
1.7 Collar
1.8, 12 Set screw
2 Mating ring
5 Seal sleeve
7 Gland plate
8 Flow distributor
9 Retaining ring
10 Throttle bushing
11 Drive collar
13 Setting device
14 HSH Cap screw

F Flush
Q Quench
D Drain

LL9UC

PDF data sheet

Features

  • API 682 Category 2 and 3, Type A, Arrangement 1 seal
  • Single seal
  • Balanced
  • Cartridge unit
  • Rotating multiple springs
  • Solid seal faces

Advantages

  • 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
  • Extended selection of materials
  • Metal parts also in special materials available

Operating range

Shaft diameter: d1 = 20 ... 110 mm (0.79" ... 4.33")
Pressure: p = vacuum ... 42 bar (... 609 PSI)
Temperature: t = -40 °C ... +176 °C (-40 °F … +349 °F)*
Sliding velocity: vg ... 23 m/s (... 75 ft/s)

* 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)

Standards and approvals

  • API 682 / ISO 21049
  • API 682 4th ed. Cat. 2/3 - 1CW-FL

Recommended applications

  • Light volatile hydrocarbons
  • Refining technology
  • Oil and gas industry
  • Petrochemical industry
  • Chemical industry
  • Power plant technology
  • CCUS
  • Hydrogen
  • Alternative fuels production
  • LPG plants
  • API 610 / ISO 13709 pumps
  • Process pumps

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