LL9DJUU
Back to overview

LL9DJUU

Request product
LL9DJUU
LL9DJUU
Request product
Technical drawing of LL9DJUU

Click image to enlarge

Item Description
1.1.1, 2.1.1 Seal ring
1.1.2, 1.3, 2.1.2, 2.3,
2.6, 3, 9, 14 O-Ring
1.1.3, 2.1.3 Spring
1.2, 2.2 Mating ring
2.4 Collar
2.5, 16 Drive screw
2.7, 18, 19 Set Screw
4, 10 Gland plate
5, 6, 11 Pin
7 Flow distributor
8, 12 Retaining ring
13 Hexagon bolt
15 Seal sleeve
17 Drive collar
20 Setting device
21 HSH Cap screw

F Flush
LBO Liquid barrier/buffer OUT
LBI Liquid barrier/buffer IN

LL9DJUU

PDF data sheet

Features

  • API 682 Category 2 and 3, Type A, Arrangement 2 and 3 seal
  • Dual seal in face-to-back arrangement
  • Same size of inboard and outboard seal
  • Balanced
  • Cartridge unit
  • Stationary multiple springs
  • Solid seal faces

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

Operating range

Shaft diameter: d1 = 20 ... 110 mm (0.79" ... 4.33")
Pressure: p = 60 bar (870 PSI)
Temperature: -40 °C … +176 °C (-40 °F … +349 °F)*
Sliding velocity: vg = 50 m/s (164 ft/s)

* Engineered up to 260 °C (500 °F) with FFKM (K) secondary seals.

Materials

Seal rings: Blister resistant carbon,
Silicon carbide SSiC (Q1), RBSiC (Q2)
Mating rings:
Silicon carbide SSiC (Q1), RBSiC (Q2)
Secondary seals:
EPDM (E), NBR (P), FKM (V), FFKM (K)
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 - 2CW-CW
  • API 682 4th ed. Cat. 2/3 - 3CW-FB

Recommended applications

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

Similar products

APItex-S

APItex-S

  • API 682 Category 1, Type A, Arrangement 1 seal
  • Single seal
  • Balanced
  • Cartridge unit
  • Independent of direction of rotation
  • Solid seal face
  • Solid seat
APItex-T

APItex-T

  • API 682 Category 1, Type A, Arrangement 2 or 3 seal
  • Dual seal in face-to-back arrangement
  • Balanced
  • Cartridge unit
  • Independent of direction of rotation
  • Shrink-fitted seal faces
  • Solid mating rings
CGSH-KD

CGSH-KD
Back to overview